1. Describe the expirement that allowed researchers to first identify the codon for a specific amino acid. 2. Which of the following statemts about the genetic code are true and which are false? Please correct each false statement. a. Each codon is composed of four bases b. Some amino acids are represented by more than one codon c.All codon represent an amino acid d. Each living species is thought to have its own unique genetic code. e. The codon AUG at the beginning of a sequence is a signal for protein synthesis to begin at that codon. f. It is not known if the code contains stop signals for protein synthesis.

1. Describe the expirement that allowed researchers to first identify the codon for a specific amino acid. 2. Which of the following statemts about the genetic code are true and which are false? Please correct each false statement. a. Each codon is composed of four bases b. Some amino acids are represented by more than one codon c.All codon represent an amino acid d. Each living species is thought to have its own unique genetic code. e. The codon AUG at the beginning of a sequence is a signal for protein synthesis to begin at that codon. f. It is not known if the code contains stop signals for protein synthesis.

Biology: The Dynamic Science (MindTap Course List)

4th Edition

ISBN:9781305389892

Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Chapter15: From Dna To Protein

Section: Chapter Questions

Problem 1ITD

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Because of the way the genetic code structured, a point mutation in a given codon is likely to have what impact on the meaning of that codon? Select all that apply. 1.It will always change the amino acid 2.It can never change the animo acid encoded 3.The amino acid encoded often will not change 4.The biochemical property of the amino acid encoded likely will not change 5.The biochemical property of the amino acid encoded will always change
1. Given the anticodon in tRNA is CUU, name the amino acid that will be added. 2. Given the anticodon in tRNA is CUU, what is the complementary codon? 3. How many synonyms code for arginine? 4. How many codons code for the amino acid cysteine? 5. How many codons code for the amino acid histidine? 6. How many codons code for the amino acid threonine?
From the picture provided, which colored option (exon variant) will give me: 1. start codon 2. Stop codon Im not sure how to identify with exon out of the 15 exon varients provided which one has the start codon and which has the stop I need to filter these colored options in order to find my start codon and stop codon
2. The 64 codons are shown in Table 1. Notice that the first two nucleotides of each codon (abbreviated by their first letter) are shown in the column on the left. To find out the amino acid specified by a given codon, find the first two letters in the column on the left, then follow that row to the column showing the last nucleotide (letter) of the codon. Note that most amino acids are coded for by more than one codon. Table 1. The Genetic Code: Codons and Their Amino Acids First Two Mocleotides af Codons Last Nocleotide of Codons A The Amino Acids phe phe leu leu Abbreviations Names UC gly glycine alanine ser ser ser ser ala UA tyr tyr term term val valine UG cys cys term trp ile isoleucine cu leu leu leu leu leu leucine serine threonine ser CC pro pro pro pro thr gin proline aspartate glutamate lysine arginine asparagine glutamine cysteine methionine CA his his gin pro asp CG arg arg arg arg glu lys AU ile ile ile met AC thr thr thr thr arg asn AA asn asn lys lys gln AG ser ser arg…
2. Transcribe the following gene sequence to the appropriate MRNA codons: TCA TTT CCA CAG ACA * AGU AAA GGU GUc UGU 3. Translate the mRNA codons (i.e. your answer to question 2) into the appropriate amino acids using the following Universal Genetic Code Chart. * Universal Genetic Code Chart Messenger RNA Codons and the Amino Acids for Which They Code SECOND BASE A UCU UAU UGU UUU UUC UUA PHE TYR CYS UCC UCA UAC UGC SER UAA UGA STOP LEU STOP UUG UGG} TRP UCG UAG CUU CCU CAU CGU HIS CUC CCC CAC CGC LEU PRO ARG CCA CCG CUA CAA CGA GLN CUG CAG CG AUU AUC ACU AAU AGU AGC AGA ASN SER ILE ACC AAC THR AAA AAGS ACA AUA AUG MET or START LYS ARG ACG AGG S GCU GCC GUU GAU GGU ASP GUC GAC GGC VAL ALA GLY GUA GCA GCG GAA GGA GGG GLU GUG GAG トエーCロ ASE A, L-RST BASE
ANSWER THIS; Click Edit DNA and make a substitution mutation that changes the first base (C) in the second codon to an A. Ø What effect does this mutation have on the polypeptide? Compare to the original polypeptide.
From the given DNA base sequence indicated below: 5’’AGCCCATATGGCCCATACGCGGAATCGC 3’ Give the codon sequence and anticodon that will interact from the codon sequence Write the amino acids produced from the codon sequence.
The sequence below is a template strand sequence for a gene (a very short one!). Identify the start codon and the amino acid sequence of this gene. Write your answer in 3 letter amino acid code. Put a hyphen between each amino acid. You should also include a description of any working or steps you have taken to determine your answer. 5' AGTCAGCAAGAAGACATCAGTGTTCCCATCTGT 3' Paragraph V B I U A = 8⁰ + v 11.
. The genetic code is thought to have evolved to maximize genetic stability by minimizing the effect on protein function of most substitution muta- tions (single-base changes). We will use the six arginine codons to test this idea. Consider all of the substitutions that could affect all of the six arginine codons. (a) How many total mutations are possible? (b) How many of these mutations are "silent," in the sense that the mutant codon is changed to another Arg codon? (c) How many of these mutations are conservative, in the sense that an Arg codon is changed to a functionally similar Lys codon?
Codons The genetic code consists of triplets of nucleotides called codons. Refer to the genetic code chart provided to answer the following questions. What is unique about the codon AUG? 2. What is unique about the codon UGA?
You continue to study the expression of the hexose kinase gene and capture the following electron micrograph of the gene being expressed. MRNA 1 20 ORI 40 60 TTCGAGCTCTCGTCGTCGAGATACGCGATGATATTACTGGIAATATĞGGGATGCACTATC 5' 3' AAGCTCGAGAGCAGCAGCTCTATGCGCTACTATAATGACCA'NTATAÇCCCTACGTGATAG CACTATC promoter RNA polymerase ribosome
Table 1. The Genetic Code: Codons and Their Amino Acids First Two Nucleotides of Codons Last Nucleotide of Codons The Amino Acids A UU phe phe leu leu Abbreviations Names UC gly glycine ser ser ser ser UA tyr tyr term ala alanine term val valine UG cys cys term trp ile isoleucine leu leucine CU leu leu leu leu ser serine CC pro pro pro pro threonine proline aspartate glutamate lysine arginine thr CA his his gin gin pro asp glu lys CG arg arg arg arg AU le ile ile met AC thr thr thr thr arg asparagine glutamine cysteine methlonine asn AA lys lys asn asn gin AG ser ser arg arg cys met GU val val val val trp phe tryptophan phenylalanine tyrosine histidine GC ala ala ala ala tyr his GA asp asp glu glu GG gly gly gly gly term termination 3. Use Table 1 to read the codons below. Find the name of the amino acid and write it in the space provided. If the letters code for more than one amino acid, separate the names by dashes. b. UUA: c. GAG: d. UAUCUA: e. AUCUUG: f. AAGAGUUCG: g. AAAUUUGGG: h.…