
Concept explainers
For each of the terms in the left column, choose the best matching phrase in the right column
a. | codon | 1. | removing base sequences corresponding to introns from the primary transcript |
b. | colinearity | 2. | UAA, UGA, or UAG |
c. | reading frame | 3. | the strand of DNA that has the same base sequence as the primary transcript |
d. | frameshift mutation | 4. | a transfer RNA molecule to which the appropriate amino acid has been attached |
e. | degeneracy of the | 5. | a group of three mRNA bases genetic code signifying one amino acid |
f. | nonsense codon | 6. | most amino acids are not specified by a single codon |
g. | initiation codon | 7. | using the information in the |
h. | template strand | 8. | the grouping of mRNA bases in threes to be read as codons |
i. | RNA-like strand | 9. | AUG in a particular context |
j. | intron | 10. | the linear sequence of amino acids in the polypeptide corresponds to the linear sequence of nucleotide pairs in the gene |
k. | RNA splicing | 11. | produces different mature mRNAs from the same primary transcript |
l. | transcription | 12. | addition or deletion of a number of base pairs other than three into the coding sequence |
m. | translation | 13. | a sequence of base pairs within a gene that is not represented by any bases in the mature mRNA |
n. | alternative splicing | 14. | the strand of DNA having the base sequence complementary to that of the primary transcript |
o. | charged tRNA | 15. | using the information encoded in the nucleotide sequence of an mRNA molecule to specify the amino acid sequence of a polypeptide molecule |
p. | reverse | 16. | copying RNA into DNA transcription |

a.
To determine:
The phrase that describes “codon” among the options given below.
1. | removing base sequences corresponding to introns from the primary transcript |
2. | UAA, UGA, or UAG |
3. | the strand of DNA that has the same base sequence as the primary transcript |
4. | a transfer RNA molecule to which the appropriate amino acid has been attached |
5. | a group of three mRNA bases genetic code signifying one amino acid |
6. | most amino acids are not specified by a single codon |
7. | using the information in the nucleotide sequence of a strand of DNA to specify the nucleotide sequence of a strand of RNA |
8. | the grouping of mRNA bases in threes to be read as codons |
9. | AUG in a particular context |
10. | the linear sequence of amino acids in the polypeptide corresponds to the linear sequence of nucleotide pairs in the gene |
11. | produces different mature mRNAs from the same primary transcript |
12. | addition or deletion of a number of base pairs other than three into the coding sequence |
13. | a sequence of base pairs within a gene that is not represented by any bases in the mature mRNA |
14. | the strand of DNA having the base sequence complementary to that of the primary transcript |
15. | using the information encoded in the nucleotide sequence of an mRNA molecule to specify the amino acid sequence of a polypeptide molecule |
16. | copying RNA into DNA transcription |
Introduction:
Codon can be defined as the group or collection of three continuous nitrogenous bases.
Answer to Problem 1P
Correct answer:
Codon: A group of three mRNA bases genetic code signifying one amino acid
Explanation of Solution
Codon is a sequence of three nucleotides which are complementary to the nucleotides present in DNA or RNA. Each codon adds a specific amino acid for the synthesis of protein.

b.
To determine:
The phrase that describes “colinearity” among the options given below.
1. | removing base sequences corresponding to introns from the primary transcript |
2. | UAA, UGA, or UAG |
3. | the strand of DNA that has the same base sequence as the primary transcript |
4. | a transfer RNA molecule to which the appropriate amino acid has been attached |
5. | a group of three mRNA bases genetic code signifying one amino acid |
6. | most amino acids are not specified by a single codon |
7. | using the information in the nucleotide sequence of a strand of DNA to specify the nucleotide sequence of a strand of RNA |
8. | the grouping of mRNA bases in threes to be read as codons |
9. | AUG in a particular context |
10. | the linear sequence of amino acids in the polypeptide corresponds to the linear sequence of nucleotide pairs in the gene |
11. | produces different mature mRNAs from the same primary transcript |
12. | addition or deletion of a number of base pairs other than three into the coding sequence |
13. | a sequence of base pairs within a gene that is not represented by any bases in the mature mRNA |
14. | the strand of DNA having the base sequence complementary to that of the primary transcript |
15. | using the information encoded in the nucleotide sequence of an mRNA molecule to specify the amino acid sequence of a polypeptide molecule |
16. | copying RNA into DNA transcription |
Introduction:
Colinearity is a type of order of sequence with respect to the another sequence in the linear order.
Answer to Problem 1P
Correct answer:
Colinearity: The linear sequence of amino acids in the polypeptide corresponds to the linear sequence of nucleotide pairs in the gene
Explanation of Solution
Colinearity is the arrangement of a sequence in the same order to another sequence in linearity. This means that the linear sequence of amino acids in the polypeptide match with the linear sequence of nucleotide pairs in the gene.

c.
To determine:
The phrase that describes “reading frame” among the options given below.
1. | removing base sequences corresponding to introns from the primary transcript |
2. | UAA, UGA, or UAG |
3. | the strand of DNA that has the same base sequence as the primary transcript |
4. | a transfer RNA molecule to which the appropriate amino acid has been attached |
5. | a group of three mRNA bases genetic code signifying one amino acid |
6. | most amino acids are not specified by a single codon |
7. | using the information in the nucleotide sequence of a strand of DNA to specify the nucleotide sequence of a strand of RNA |
8. | the grouping of mRNA bases in threes to be read as codons |
9. | AUG in a particular context |
10. | the linear sequence of amino acids in the polypeptide corresponds to the linear sequence of nucleotide pairs in the gene |
11. | produces different mature mRNAs from the same primary transcript |
12. | addition or deletion of a number of base pairs other than three into the coding sequence |
13. | a sequence of base pairs within a gene that is not represented by any bases in the mature mRNA |
14. | the strand of DNA having the base sequence complementary to that of the primary transcript |
15. | using the information encoded in the nucleotide sequence of an mRNA molecule to specify the amino acid sequence of a polypeptide molecule |
16. | copying RNA into DNA transcription |
Introduction:
Reading frame is the defined set of order of nucleotide sequnces in the direction of their reading structures.
Answer to Problem 1P
Correct answer:
Reading frame: The grouping of mRNA bases in threes to be read as codons
Explanation of Solution
Reading frame is the grouping of mRNA bases in three which can be read as codons.

d.
To determine:
The phrase that describes “frameshift mutation” among the options given below.
1. | removing base sequences corresponding to introns from the primary transcript |
2. | UAA, UGA, or UAG |
3. | the strand of DNA that has the same base sequence as the primary transcript |
4. | a transfer RNA molecule to which the appropriate amino acid has been attached |
5. | a group of three mRNA bases genetic code signifying one amino acid |
6. | most amino acids are not specified by a single codon |
7. | using the information in the nucleotide sequence of a strand of DNA to specify the nucleotide sequence of a strand of RNA |
8. | the grouping of mRNA bases in threes to be read as codons |
9. | AUG in a particular context |
10. | the linear sequence of amino acids in the polypeptide corresponds to the linear sequence of nucleotide pairs in the gene |
11. | produces different mature mRNAs from the same primary transcript |
12. | addition or deletion of a number of base pairs other than three into the coding sequence |
13. | a sequence of base pairs within a gene that is not represented by any bases in the mature mRNA |
14. | the strand of DNA having the base sequence complementary to that of the primary transcript |
15. | using the information encoded in the nucleotide sequence of an mRNA molecule to specify the amino acid sequence of a polypeptide molecule |
16. | copying RNA into DNA transcription |
Introduction:
Insertion or deletion of the particular nucleotide bases in a given base sequence results in the frameshift type of mutation.
Answer to Problem 1P
Correct answer:
Frameshift mutation: Addition or deletion of a number of base pairs other than three into the coding sequence
Explanation of Solution
Frameshift mutation is the mutation which occurs because of addition or deletion of bases in the DNA of a gene.

e.
To determine:
The phrase that describes “degeneracy of the codon” among the options given below.
1. | removing base sequences corresponding to introns from the primary transcript |
2. | UAA, UGA, or UAG |
3. | the strand of DNA that has the same base sequence as the primary transcript |
4. | a transfer RNA molecule to which the appropriate amino acid has been attached |
5. | a group of three mRNA bases genetic code signifying one amino acid |
6. | most amino acids are not specified by a single codon |
7. | using the information in the nucleotide sequence of a strand of DNA to specify the nucleotide sequence of a strand of RNA |
8. | the grouping of mRNA bases in threes to be read as codons |
9. | AUG in a particular context |
10. | the linear sequence of amino acids in the polypeptide corresponds to the linear sequence of nucleotide pairs in the gene |
11. | produces different mature mRNAs from the same primary transcript |
12. | addition or deletion of a number of base pairs other than three into the coding sequence |
13. | a sequence of base pairs within a gene that is not represented by any bases in the mature mRNA |
14. | the strand of DNA having the base sequence complementary to that of the primary transcript |
15. | using the information encoded in the nucleotide sequence of an mRNA molecule to specify the amino acid sequence of a polypeptide molecule |
16. | copying RNA into DNA transcription |
Introduction:
Degeneracy of the codon simply means that one amino acid can be specified by more than one codon.
Answer to Problem 1P
Correct answer:
Degeneracy of the genetic code: Most amino acids are not specified by a single codon
Explanation of Solution
Degeneracy of the genetic code is referred to the different codons for one amino acid. There are some amino acids which are coded by more than one codon.

f.
To determine:
The phrase that describes “nonsense codon” among the options given below.
1. | removing base sequences corresponding to introns from the primary transcript |
2. | UAA, UGA, or UAG |
3. | the strand of DNA that has the same base sequence as the primary transcript |
4. | a transfer RNA molecule to which the appropriate amino acid has been attached |
5. | a group of three mRNA bases genetic code signifying one amino acid |
6. | most amino acids are not specified by a single codon |
7. | using the information in the nucleotide sequence of a strand of DNA to specify the nucleotide sequence of a strand of RNA |
8. | the grouping of mRNA bases in threes to be read as codons |
9. | AUG in a particular context |
10. | the linear sequence of amino acids in the polypeptide corresponds to the linear sequence of nucleotide pairs in the gene |
11. | produces different mature mRNAs from the same primary transcript |
12. | addition or deletion of a number of base pairs other than three into the coding sequence |
13. | a sequence of base pairs within a gene that is not represented by any bases in the mature mRNA |
14. | the strand of DNA having the base sequence complementary to that of the primary transcript |
15. | using the information encoded in the nucleotide sequence of an mRNA molecule to specify the amino acid sequence of a polypeptide molecule |
16. | copying RNA into DNA transcription |
Introduction:
Nonsense codons are not involved in the coding of any type of amino acids. These are the termination codons that are used for the termination of the process.
Answer to Problem 1P
Correct answer:
Nonsense codon: UAA, UGA, or UAG
Explanation of Solution
Nonsense codons are the type of codons which do not have normal tRNA molecule. These codons terminate the process of protein synthesis. There are three types of nonsense codons and are UAG, UAA, and UGA.

g.
To determine:
The phrase that describes “initiation codon” among the options given below.
1. | removing base sequences corresponding to introns from the primary transcript |
2. | UAA, UGA, or UAG |
3. | the strand of DNA that has the same base sequence as the primary transcript |
4. | a transfer RNA molecule to which the appropriate amino acid has been attached |
5. | a group of three mRNA bases genetic code signifying one amino acid |
6. | most amino acids are not specified by a single codon |
7. | using the information in the nucleotide sequence of a strand of DNA to specify the nucleotide sequence of a strand of RNA |
8. | the grouping of mRNA bases in threes to be read as codons |
9. | AUG in a particular context |
10. | the linear sequence of amino acids in the polypeptide corresponds to the linear sequence of nucleotide pairs in the gene |
11. | produces different mature mRNAs from the same primary transcript |
12. | addition or deletion of a number of base pairs other than three into the coding sequence |
13. | a sequence of base pairs within a gene that is not represented by any bases in the mature mRNA |
14. | the strand of DNA having the base sequence complementary to that of the primary transcript |
15. | using the information encoded in the nucleotide sequence of an mRNA molecule to specify the amino acid sequence of a polypeptide molecule |
16. | copying RNA into DNA transcription |
Introduction:
Initiation codon is the sequence of three nucleotides named as A, U, and G. It is the site from which process of translation starts.
Answer to Problem 1P
Correct answer:
Initiation codon: AUG in a particular context
Explanation of Solution
AUG is an initiation codon. It is the codon from where the process of translation starts on the mRNA transcript.

h.
To determine:
The phrase that describes “template strand” among the options given below.
1. | removing base sequences corresponding to introns from the primary transcript |
2. | UAA, UGA, or UAG |
3. | the strand of DNA that has the same base sequence as the primary transcript |
4. | a transfer RNA molecule to which the appropriate amino acid has been attached |
5. | a group of three mRNA bases genetic code signifying one amino acid |
6. | most amino acids are not specified by a single codon |
7. | using the information in the nucleotide sequence of a strand of DNA to specify the nucleotide sequence of a strand of RNA |
8. | the grouping of mRNA bases in threes to be read as codons |
9. | AUG in a particular context |
10. | the linear sequence of amino acids in the polypeptide corresponds to the linear sequence of nucleotide pairs in the gene |
11. | produces different mature mRNAs from the same primary transcript |
12. | addition or deletion of a number of base pairs other than three into the coding sequence |
13. | a sequence of base pairs within a gene that is not represented by any bases in the mature mRNA |
14. | the strand of DNA having the base sequence complementary to that of the primary transcript |
15. | using the information encoded in the nucleotide sequence of an mRNA molecule to specify the amino acid sequence of a polypeptide molecule |
16. | copying RNA into DNA transcription |
Introduction:
Template strand is the coding strand which is used for the synthesis of the messenger ribonucleic acid.
Answer to Problem 1P
Correct answer:
Template strand: The strand of DNA having the base sequence complementary to that of the primary transcript
Explanation of Solution
Template strand is the strand of DNA which is responsible for the synthesis of mRNA strand. It has complementary sequences to the primary transcript.

i.
To determine:
The phrase that describes “RNA-like strand” among the options given below.
1. | removing base sequences corresponding to introns from the primary transcript |
2. | UAA, UGA, or UAG |
3. | the strand of DNA that has the same base sequence as the primary transcript |
4. | a transfer RNA molecule to which the appropriate amino acid has been attached |
5. | a group of three mRNA bases genetic code signifying one amino acid |
6. | most amino acids are not specified by a single codon |
7. | using the information in the nucleotide sequence of a strand of DNA to specify the nucleotide sequence of a strand of RNA |
8. | the grouping of mRNA bases in threes to be read as codons |
9. | AUG in a particular context |
10. | the linear sequence of amino acids in the polypeptide corresponds to the linear sequence of nucleotide pairs in the gene |
11. | produces different mature mRNAs from the same primary transcript |
12. | addition or deletion of a number of base pairs other than three into the coding sequence |
13. | a sequence of base pairs within a gene that is not represented by any bases in the mature mRNA |
14. | the strand of DNA having the base sequence complementary to that of the primary transcript |
15. | using the information encoded in the nucleotide sequence of an mRNA molecule to specify the amino acid sequence of a polypeptide molecule |
16. | copying RNA into DNA transcription |
Introduction:
RNA like strand is the strand that possesses almost same sequence as of the primary transcript.
Answer to Problem 1P
Correct answer:
RNA-like strand: The strand of DNA that has the same base sequence as the primary transcript
Explanation of Solution
RNA-like strand is the strand of the DNA which has the same base sequences as the primary transcript.

j.
To determine:
The phrase that describes “intron” among the options given below.
1. | removing base sequences corresponding to introns from the primary transcript |
2. | UAA, UGA, or UAG |
3. | the strand of DNA that has the same base sequence as the primary transcript |
4. | a transfer RNA molecule to which the appropriate amino acid has been attached |
5. | a group of three mRNA bases genetic code signifying one amino acid |
6. | most amino acids are not specified by a single codon |
7. | using the information in the nucleotide sequence of a strand of DNA to specify the nucleotide sequence of a strand of RNA |
8. | the grouping of mRNA bases in threes to be read as codons |
9. | AUG in a particular context |
10. | the linear sequence of amino acids in the polypeptide corresponds to the linear sequence of nucleotide pairs in the gene |
11. | produces different mature mRNAs from the same primary transcript |
12. | addition or deletion of a number of base pairs other than three into the coding sequence |
13. | a sequence of base pairs within a gene that is not represented by any bases in the mature mRNA |
14. | the strand of DNA having the base sequence complementary to that of the primary transcript |
15. | using the information encoded in the nucleotide sequence of an mRNA molecule to specify the amino acid sequence of a polypeptide molecule |
16. | copying RNA into DNA transcription |
Introduction:
Introns are the noncoding regions that are not involved in the synthesis of any type of amino acid.
Answer to Problem 1P
Correct answer:
Intron: A sequence of base pairs within a gene that is not represented by any bases in the mature mRNA
Explanation of Solution
Introns are the sequences of base pairs present in a gene that is not functional. They are not represented by any bases in the mature mRNA transcript.

k.
To determine:
The phrase that describes “RNA splicing” among the options given below.
1. | removing base sequences corresponding to introns from the primary transcript |
2. | UAA, UGA, or UAG |
3. | the strand of DNA that has the same base sequence as the primary transcript |
4. | a transfer RNA molecule to which the appropriate amino acid has been attached |
5. | a group of three mRNA bases genetic code signifying one amino acid |
6. | most amino acids are not specified by a single codon |
7. | using the information in the nucleotide sequence of a strand of DNA to specify the nucleotide sequence of a strand of RNA |
8. | the grouping of mRNA bases in threes to be read as codons |
9. | AUG in a particular context |
10. | the linear sequence of amino acids in the polypeptide corresponds to the linear sequence of nucleotide pairs in the gene |
11. | produces different mature mRNAs from the same primary transcript |
12. | addition or deletion of a number of base pairs other than three into the coding sequence |
13. | a sequence of base pairs within a gene that is not represented by any bases in the mature mRNA |
14. | the strand of DNA having the base sequence complementary to that of the primary transcript |
15. | using the information encoded in the nucleotide sequence of an mRNA molecule to specify the amino acid sequence of a polypeptide molecule |
16. | copying RNA into DNA transcription |
Introduction:
RNA splicing is the process of modification of RNA during which removal of introns are carried out.
Answer to Problem 1P
Correct answer:
RNA splicing: Removing base sequences corresponding to introns from the primary transcript
Explanation of Solution
RNA splicing is the process which involves removal of the base sequences corresponding to introns from the primary transcript.

l.
To determine:
The phrase that describes “transcription” among the options given below.
1. | removing base sequences corresponding to introns from the primary transcript |
2. | UAA, UGA, or UAG |
3. | the strand of DNA that has the same base sequence as the primary transcript |
4. | a transfer RNA molecule to which the appropriate amino acid has been attached |
5. | a group of three mRNA bases genetic code signifying one amino acid |
6. | most amino acids are not specified by a single codon |
7. | using the information in the nucleotide sequence of a strand of DNA to specify the nucleotide sequence of a strand of RNA |
8. | the grouping of mRNA bases in threes to be read as codons |
9. | AUG in a particular context |
10. | the linear sequence of amino acids in the polypeptide corresponds to the linear sequence of nucleotide pairs in the gene |
11. | produces different mature mRNAs from the same primary transcript |
12. | addition or deletion of a number of base pairs other than three into the coding sequence |
13. | a sequence of base pairs within a gene that is not represented by any bases in the mature mRNA |
14. | the strand of DNA having the base sequence complementary to that of the primary transcript |
15. | using the information encoded in the nucleotide sequence of an mRNA molecule to specify the amino acid sequence of a polypeptide molecule |
16. | copying RNA into DNA transcription |
Introduction:
A process of conversion of DNA to the messenger RNA is referred to as the process of transcription.
Answer to Problem 1P
Correct answer:
Transcription: Using the information in the nucleotide sequence of a strand of DNA to specify the nucleotide sequence of a strand of RNA
Explanation of Solution
Transcription is the process in which RNA strand is produced over DNA template. The process uses the information present in the nucleotide sequence of a DNA strand.

m.
To determine:
The phrase that describes “translation” among the options given below.
1. | removing base sequences corresponding to introns from the primary transcript |
2. | UAA, UGA, or UAG |
3. | the strand of DNA that has the same base sequence as the primary transcript |
4. | a transfer RNA molecule to which the appropriate amino acid has been attached |
5. | a group of three mRNA bases genetic code signifying one amino acid |
6. | most amino acids are not specified by a single codon |
7. | using the information in the nucleotide sequence of a strand of DNA to specify the nucleotide sequence of a strand of RNA |
8. | the grouping of mRNA bases in threes to be read as codons |
9. | AUG in a particular context |
10. | the linear sequence of amino acids in the polypeptide corresponds to the linear sequence of nucleotide pairs in the gene |
11. | produces different mature mRNAs from the same primary transcript |
12. | addition or deletion of a number of base pairs other than three into the coding sequence |
13. | a sequence of base pairs within a gene that is not represented by any bases in the mature mRNA |
14. | the strand of DNA having the base sequence complementary to that of the primary transcript |
15. | using the information encoded in the nucleotide sequence of an mRNA molecule to specify the amino acid sequence of a polypeptide molecule |
16. | copying RNA into DNA transcription |
Introduction:
A process of conversion of messenger RNA into the functional protein is referred to as the process of translation.
Answer to Problem 1P
Correct answer:
Translation: Using the information encoded in the nucleotide sequence of an mRNA molecule to specify the amino acid sequence of a polypeptide molecule.
Explanation of Solution
Translation is the process of protein synthesis. A polypeptide is formed from the mRNA strand by using the information present in the nucleotides of mRNA.

n.
To determine:
The phrase that describes “alternative splicing” among the options given below.
1. | removing base sequences corresponding to introns from the primary transcript |
2. | UAA, UGA, or UAG |
3. | the strand of DNA that has the same base sequence as the primary transcript |
4. | a transfer RNA molecule to which the appropriate amino acid has been attached |
5. | a group of three mRNA bases genetic code signifying one amino acid |
6. | most amino acids are not specified by a single codon |
7. | using the information in the nucleotide sequence of a strand of DNA to specify the nucleotide sequence of a strand of RNA |
8. | the grouping of mRNA bases in threes to be read as codons |
9. | AUG in a particular context |
10. | the linear sequence of amino acids in the polypeptide corresponds to the linear sequence of nucleotide pairs in the gene |
11. | produces different mature mRNAs from the same primary transcript |
12. | addition or deletion of a number of base pairs other than three into the coding sequence |
13. | a sequence of base pairs within a gene that is not represented by any bases in the mature mRNA |
14. | the strand of DNA having the base sequence complementary to that of the primary transcript |
15. | using the information encoded in the nucleotide sequence of an mRNA molecule to specify the amino acid sequence of a polypeptide molecule |
16. | copying RNA into DNA transcription |
Introduction:
When different types of mature ribonucleic acid can be produced with the help of single transcript, the process is called alternative splicing.
Answer to Problem 1P
Correct answer:
Alternative splicing: Produces different mature mRNAs from the same primary transcript
Explanation of Solution
Alternative splicing is the process that produces different mRNA transcript from the same primary transcript.

o.
To determine:
The phrase that describes “charged tRNA” among the options given below.
1. | removing base sequences corresponding to introns from the primary transcript |
2. | UAA, UGA, or UAG |
3. | the strand of DNA that has the same base sequence as the primary transcript |
4. | a transfer RNA molecule to which the appropriate amino acid has been attached |
5. | a group of three mRNA bases genetic code signifying one amino acid |
6. | most amino acids are not specified by a single codon |
7. | using the information in the nucleotide sequence of a strand of DNA to specify the nucleotide sequence of a strand of RNA |
8. | the grouping of mRNA bases in threes to be read as codons |
9. | AUG in a particular context |
10. | the linear sequence of amino acids in the polypeptide corresponds to the linear sequence of nucleotide pairs in the gene |
11. | produces different mature mRNAs from the same primary transcript |
12. | addition or deletion of a number of base pairs other than three into the coding sequence |
13. | a sequence of base pairs within a gene that is not represented by any bases in the mature mRNA |
14. | the strand of DNA having the base sequence complementary to that of the primary transcript |
15. | using the information encoded in the nucleotide sequence of an mRNA molecule to specify the amino acid sequence of a polypeptide molecule |
16. | copying RNA into DNA transcription |
Introduction:
Charged transfer RNA molecule is that to which a functinal amino acid has been attached.
Answer to Problem 1P
Correct answer:
charged tRNA: A transfer RNA molecule to which the appropriate amino acid has been attached
Explanation of Solution
Charged tRNA is a transfer RNA molecule. It carries the correct amino acid that is attached to the mRNA transcript for protein synthesis.

p.
To determine:
The phrase that describes “reverse” among the options given below.
1. | removing base sequences corresponding to introns from the primary transcript |
2. | UAA, UGA, or UAG |
3. | the strand of DNA that has the same base sequence as the primary transcript |
4. | a transfer RNA molecule to which the appropriate amino acid has been attached |
5. | a group of three mRNA bases genetic code signifying one amino acid |
6. | most amino acids are not specified by a single codon |
7. | using the information in the nucleotide sequence of a strand of DNA to specify the nucleotide sequence of a strand of RNA |
8. | the grouping of mRNA bases in threes to be read as codons |
9. | AUG in a particular context |
10. | the linear sequence of amino acids in the polypeptide corresponds to the linear sequence of nucleotide pairs in the gene |
11. | produces different mature mRNAs from the same primary transcript |
12. | addition or deletion of a number of base pairs other than three into the coding sequence |
13. | a sequence of base pairs within a gene that is not represented by any bases in the mature mRNA |
14. | the strand of DNA having the base sequence complementary to that of the primary transcript |
15. | using the information encoded in the nucleotide sequence of an mRNA molecule to specify the amino acid sequence of a polypeptide molecule |
16. | copying RNA into DNA transcription |
Introduction:
When DNA is produced from the information stored in the RNA, the process is referred to as reverse transcription.
Answer to Problem 1P
Correct answer:
Reverse transcription: Copying RNA into DNA transcription
Explanation of Solution
Reverse transcription is the process in which the information of RNA is copied into the strand of DNA. The process is catalyzed by reverse transcriptase enzyme.
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Chapter 8 Solutions
Genetics: From Genes to Genomes
- 9. Aerobic respiration of one lipid molecule. The lipid is composed of one glycerol molecule connected to two fatty acid tails. One fatty acid is 12 carbons long and the other fatty acid is 18 carbons long in the figure below. Use the information below to determine how much ATP will be produced from the glycerol part of the lipid. Then, in part B, determine how much ATP is produced from the 2 fatty acids of the lipid. Finally put the NADH and ATP yields together from the glycerol and fatty acids (part A and B) to determine your total number of ATP produced per lipid. Assume no other carbon source is available. 18 carbons fatty acids 12 carbons 9 glycerol A. Glycerol is broken down to glyceraldehyde 3-phosphate, a glycolysis intermediate via the following pathway shown in the figure below. Notice this process costs one ATP but generates one FADH2. Continue generating ATP with glyceraldehyde-3-phosphate using the standard pathway and aerobic respiration. glycerol glycerol-3- phosphate…arrow_forwardNormal dive (for diving humans) normal breathing dive normal breathing Oz level CO2 level urgent need to breathe Oz blackout zone high CO2 triggers breathing 6. This diagram shows rates of oxygen depletion and carbon dioxide accumulation in the blood in relation to the levels needed to maintain consciousness and trigger the urgent need to breathe in diving humans. How might the location and slope of the O₂ line differ for diving marine mammals such as whales and dolphins? • How might the location and slope of the CO₂ line differ for diving marine mammals such as whales and dolphins? • • Draw in predicted lines for O2 and CO2, based on your reasoning above. How might the location of the Urgent Need to Breathe line and the O2 Blackout Zone line differ for diving marine mammals? What physiological mechanisms account for each of these differences, resulting in the ability of marine mammals to stay submerged for long periods of time?arrow_forwardforaging/diet type teeth tongue stomach intestines cecum Insectivory numerous, spiky, incisors procumbentExample: moleExample: shrew -- simple short mostly lacking Myrmecophagy absent or reduced in numbers, peg-likeExample: tamandua anteater extremely long simple, often roughened short small or lacking Terrestrial carnivory sharp incisors; long, conical canines; often carnassial cheek teeth; may have crushing molarsExample: dog -- simple short small Aquatic carnivory homodont, spiky, numerousExample: common dolphin -- simple or multichambered (cetaceans only) variable small or absent Sanguinivory very sharp upper incisors; reduced cheek teethExample: vampire bat grooved tubular, highly extensible long small or lacking Herbivory (except nectivores) incisors robust or absent; canines reduced or absent; diastema; cheek teeth enlarged with complex occlusal surfacesExample: beaver -- simple (hindgut fermenters) or multichambered (ruminants) long large Filter feeding none…arrow_forward
- 3. Shown below is the dental formula and digestive tract anatomy of three mammalian species (A, B, and C). What kind of diet would you expect each species to have? Support your answers with what you can infer from the dental formula and what you can see in the diagram. Broadly speaking, what accounts for the differences? Species A 3/3, 1/1, 4/4, 3/3 པར『ན་ cm 30 Species B 4/3, 1/1, 2/2, 4/4 cm 10 Species C 0/4, 0/0,3/3, 3/3 020arrow_forward3. Shown below is the dental formula and digestive tract anatomy of three mammalian species (A, B, and C). What kind of diet would you expect each species to have? Support your answers with what you can infer from the dental formula and what you can see in the diagram. Broadly speaking, what accounts for the differences? Species A 3/3, 1/1, 4/4, 3/3 cm 30 Species B 0/4, 0/0, 3/3, 3/3 cm 10 Species C 4/3, 1/1, 2/2, 4/4 E 0 cm 20 AILarrow_forwardNormal dive (for diving humans) normal breathing dive normal breathing Oz level CO₂ level urgent need to breathe Oz blackout zone high CO₂ triggers breathing 6. This diagram shows rates of oxygen depletion and carbon dioxide accumulation in the blood in relation to the levels needed to maintain consciousness and trigger the urgent need to breathe in diving humans. • How might the location and slope of the O2 line differ for diving marine mammals such as whales and dolphins? • How might the location and slope of the CO2 line differ for diving marine mammals such as whales and dolphins? • • Draw in predicted lines for O2 and CO2, based on your reasoning above. How might the location of the Urgent Need to Breathe line and the O2 Blackout Zone line differ for diving marine mammals? What physiological mechanisms account for each of these differences, resulting in the ability of marine mammals to stay submerged for long periods of time?arrow_forward
- How much ATP will be produced during the following metabolic scenario: Aerobic respiration of a 5mM lipid solution that is made up of one glycerol and an 8-carbon fatty acid and 12-carbon fatty acid. Recall that when glycerol breaks down to Glyceraldehyde-3-phosphate it costs one ATP but your get an extra FADH2. Every two carbons of a fatty acid break down to one acetyl-CoA. Units cannot be entered in this style of question but the units of your answer should be in mM of ATP.arrow_forwardIf a bacterium using aerobic respiration was to degrade one small protein molecule into 8 molecules of pyruvic acid, how many ATP would that cell make? Assume there is no other carbon source. Units cannot be entered in this style of question but the units of your answer should be in molecules of ATP.arrow_forwardIf a bacterium using aerobic respiration was to degrade a 30 mM solution of citric acid, how many ATP would that cell make? Assume no other carbon source is available. Units cannot be entered in this style of question but the units of your answer should be in mM of ATP.arrow_forward
- How much ATP will be produced during the following metabolic scenario: Aerobic respiration of a 5mM lipid solution that is made up of one glycerol and an 8-carbon fatty acid and 12-carbon fatty acid. Recall that when glycerol breaks down to Glyceraldehyde-3-phosphate it costs one ATP but your get an extra FADH2. Every two carbons of a fatty acid break down to one acetyl-CoA. (pathways will be provided on the exam) Units cannot be entered in this style of question but the units of your answer should be in mM of ATP.arrow_forwardWhen beta-lactamase was isolated from Staphylcoccus aureus and treated with a phosphorylating agent, only the active site, serine was phosphorylated. Additionally, the serine was found to constitute 0.35% (by weight) of this beta-lactamase enzyme. Using this, calculate the molecular weight of this enzyme and estimate the number of amino acids present in the polypeptide.arrow_forwardBased on your results from the Mannitol Salt Agar (MSA) media, which of your bacteria were mannitol fermenters and which were not mannitol fermenters?arrow_forward
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