Campbell Biology
12th Edition
ISBN: 9780135188743
Author: Urry
Publisher: PEARSON
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Chapter 17, Problem 7TYU
Summary Introduction
Introduction: The genetic information of DNA is based on the
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Which of the following is TRUE regarding reading frame?
a) An open reading frame can have many stop codons within the coding exons
(CDS's).
O b) There are three possible reading frames on the + DNA strand and three on
the DNA strand.
O c) A gene can have one exon with a +2 reading frame and another exon with a
-3 reading frame.
O d) Both A and B are true.
Sickle cell anemia is a widespread disease in many African countries and can be caused by a
change in the amino acid sequence from glutamic acid to valine. A patient is diagnosed with
the disease and a genetic fingerprint reveals the following DNA sequence for the gene:
(a)
(b)
(c)
(d)
(e)
Write down the mRNA sequence for the given DNA sense strand indicating the
polarity.
Derive the polypeptide from the mRNA molecule using the table of the genetic code
(Table Q1 below) again indicating the polarity of the peptide chain.
Indicate the position in the DNA molecule that could have caused the disease and write
down all possible point mutations in the DNA sequence that could have caused it. [
The polypeptide chain is polymerized at the ribosomes using t-RNA molecules. Write
down all possible t-RNA molecules with their anti-codons that are used to polymerize
the amino acid VAL. Indicate the polarity.
3'-TAC TGA GCA AGA TTA CAT ACT-5'
Explain what is meant by redundancy of the genetic code.…
At the DNA level, a mutation in a promoter region where six nucleotides are added.
a) substitution
O b) insertion
O c) in frame insertion
O d) frameshift
O e) B or C
Chapter 17 Solutions
Campbell Biology
Ch. 17.1 - Prob. 1CCCh. 17.1 - What polypeptide product would you expect from a...Ch. 17.1 - Prob. 3CCCh. 17.2 - MAKE CONNECTIONS In a research artide about...Ch. 17.2 - What enables RNA polymerase to start transcribing...Ch. 17.2 - WHAT IF? Suppose X-rays caused a sequence change...Ch. 17.3 - There are about 20,000 human protein-coding genes....Ch. 17.3 - How is RNA splicing similar to how you would watch...Ch. 17.3 - Prob. 3CCCh. 17.4 - What two processes ensure that the correct amino...
Ch. 17.4 - Prob. 2CCCh. 17.4 - Prob. 3CCCh. 17.4 - WH AT IF? In eukaryotic cells, mRNAs have been...Ch. 17.5 - What happens when one nucleotide pair is lost from...Ch. 17.5 - MAKE CONNECTIONS Individuals heterozygous for the...Ch. 17.5 - WHAT IF? DRAW IT The template strand of a gene...Ch. 17.5 - Prob. 4CCCh. 17 - Describe the process of gene expression, by which...Ch. 17 - What are the similarities and differences in the...Ch. 17 - What function do the 5' cap and the poly-A tail...Ch. 17 - Prob. 17.4CRCh. 17 - What will be the results of chemically modifying...Ch. 17 - In eukaryotic cells, transcription cannot begin...Ch. 17 - Prob. 2TYUCh. 17 - The anticodon of a particular tRNA molecule is (A)...Ch. 17 - Prob. 4TYUCh. 17 - Which component is not directly involved in...Ch. 17 - Using Figure 17.6, identify a 5' 3' sequence of...Ch. 17 - Prob. 7TYUCh. 17 - Would the coupling of the processes shown in...Ch. 17 - Prob. 9TYUCh. 17 - Prob. 10TYUCh. 17 - scientific inquiry Knowing that the genetic code...Ch. 17 - Prob. 12TYUCh. 17 - Prob. 13TYU
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- 35)arrow_forward1. (a) Which of the following statements is TRUE? DNA polymerase moves in a 5 to 3 direction in proofreading and correcting synthesized DNA. RNA polymerase moves in a 5 to 3 direction in synthesizing mRNA. Ribosome moves in a 3 to 5 direction during translation. tRNA moves in a 3 to 5 direction during translation. (b) "In this mutation, most amino acids are replaced due to a deletion of a nucleotide base." missense mutation nonsense mutation silent mutation frameshift mutationarrow_forwardAt the DNA level, a mutation in a protein coding region where two nucleotides are deleted. O a) substitution O b) deletion O c) missense O d) frameshift O e) B or Darrow_forward
- Identify which mutation is most likely to impact the function of the protein it encodes a) silent mutation b) mutation at the third site of a codon c) nonsense mutation d) missense mutationarrow_forwardWhich of the following types of enzymes is primarily responsible for setting up the genetic code? 1.) Kinases 2.) DNA ligase 3.) DNA gyrase 4.) peptidyl transferase 5.) aminoacyl tRNA synthetases (charging enzymes)arrow_forwardWhich of the following statements most accurately describes the action of the enzyme RNA polymerase?Select one 1.) RNA polymerase will transcribe only the exons by skipping over the introns within a eukaryotic gene sequence 2.) RNA polymerase will transcribe both DNA strands, moving in the 3' to 5' direction for one strand and 5' to 3' on the other 3.) RNA polymerase will transcribe both DNA strands, but only one RNA molecule will be used during translation 4.)None of the statements accurately describe the function of RNA polymerasearrow_forward
- Which of the following would be present in a genome but not the transcriptome? (Select all) A) Introns B) Exons C) PolyA tail D) Promoterarrow_forwardif you have the following sequence of DNA 5' ATTGCGGAGCCTCGAT 3' do the following:arrow_forwardProcess by which the DNA sequences encoding exons are exchanged and reordered through genetic recombination between DNA sequences encoding introns. Group of answer choices a)RNA editing b)Exon Definition c) Exon Shuffling d)Transesterificationarrow_forward
- In your own wordsarrow_forwardThe characteristic way in which the DNA molecule is copied to form mRNA is most related to: a) the ability of RNA polymerase to match the shape of and the charges of the DNA monomers to the complementary mRNA nucleotide monomers, b) the ability of RNA polymerase to match the shape of and the charges of the DNA monomers to the anti-codons of tRNA, c) The interaction with the cell membrane, d) All of these e) None of these are correctarrow_forward1) The direction of transfer of genetic information in all living things (as defined in the central dogma of molecular biology) is as follows: A) Protein → DNA → MRNA B) DNA → MRNA → Protein C) DNA → tRNA → Protein D) Protein → tRNA → DNAarrow_forward
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