Biochemistry: The Molecular Basis of Life
6th Edition
ISBN: 9780190209896
Author: Trudy McKee, James R. McKee
Publisher: Oxford University Press
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Chapter 17, Problem 24RQ
Summary Introduction
To review:
The impact of the 1953 published Watson–Crick paper on the genetic research.
Introduction:
Watson and Crick, in 1953, discovered a double-stranded and helical model of DNA (deoxyribonucleic acid) and shared the Nobel prize for the same in 1962. Their discovery of the DNA model opened gateways for acquiring immense information about the genetic behavior.
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Question #3: CRISPR has been used to cure an individual from sickle cell. Below is a Sanger
electropherogram of a sequence from a patient without sickle cell and one with sickle cell.
Sequence from a normal individual
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Sequence from the diseased individual
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a) Where is the change in the sequence and what is the consequence to the
protein sequence of this mutation?
b) Below is an image of the normal and diseased quaternary hemoglobin
protein. What is different about the protein shape and why does that
structure have a huge impact on its function (please name the function!)?
Adult haemogBRAR
G G
G G
A
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Sickle Cell haemoglobin S
Structure a s
RARY
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c) If you were to use CRISPR to modify the genome of a diseased individual,
to which nucleotides might you design your guide RNA? Why?
d) RNA Seq is used to determine off-target effects of Cas9 cleavage. Why is this
an appropriate tool to determine these effects?
e) Data on…
Question 1.
Enzymes, proteins and deoxyribonucleic acid (DNA)
macromolecules. Enzymes are not only speed up the reaction, but also are necessary for DNA
repreduction.
are important biological
a) Compare the process of protein synthesis between eukaryote mRNA and viral RNA
b) With the aid of a diagram, draw an adapter molecule that recognizes the codons of mRNA
and explain its functions in DNA translation.
Question 43
The addition of restriction endonucleases in the cloning process is done following the ligation with DNA ligase.
A) True
B) False
Chapter 17 Solutions
Biochemistry: The Molecular Basis of Life
Ch. 17 - Prob. 1QCh. 17 - Prob. 2QCh. 17 - Prob. 3QCh. 17 - Prob. 4QCh. 17 - Prob. 5QCh. 17 - Prob. 6QCh. 17 - Prob. 7QCh. 17 - Prob. 8QCh. 17 - Prob. 1RQCh. 17 - Prob. 2RQ
Ch. 17 - Prob. 3RQCh. 17 - Prob. 4RQCh. 17 - Prob. 5RQCh. 17 - Prob. 6RQCh. 17 - Prob. 7RQCh. 17 - Prob. 8RQCh. 17 - Prob. 9RQCh. 17 - Prob. 10RQCh. 17 - Prob. 11RQCh. 17 - Prob. 12RQCh. 17 - Prob. 13RQCh. 17 - Prob. 14RQCh. 17 - Prob. 15RQCh. 17 - Prob. 16RQCh. 17 - Prob. 17RQCh. 17 - Prob. 18RQCh. 17 - Prob. 19RQCh. 17 - Prob. 20RQCh. 17 - Prob. 21RQCh. 17 - Prob. 22RQCh. 17 - Prob. 23RQCh. 17 - Prob. 24RQCh. 17 - Prob. 25RQCh. 17 - Prob. 26RQCh. 17 - Prob. 27RQCh. 17 - Prob. 28RQCh. 17 - Prob. 29RQCh. 17 - Prob. 30RQCh. 17 - Prob. 31RQCh. 17 - Prob. 32RQCh. 17 - Prob. 33RQCh. 17 - Prob. 34RQCh. 17 - Prob. 35RQCh. 17 - Prob. 36RQCh. 17 - Prob. 37RQCh. 17 - Prob. 38RQCh. 17 - Prob. 39RQCh. 17 - Prob. 40RQCh. 17 - Prob. 41FBCh. 17 - Prob. 42FBCh. 17 - Prob. 43FBCh. 17 - Prob. 44FBCh. 17 - Prob. 45FBCh. 17 - Prob. 46FBCh. 17 - Prob. 47FBCh. 17 - Prob. 48FBCh. 17 - Prob. 49FBCh. 17 - Prob. 50FBCh. 17 - Prob. 51SACh. 17 - Prob. 52SACh. 17 - Prob. 53SACh. 17 - Prob. 54SACh. 17 - Prob. 55SACh. 17 - Prob. 56TQCh. 17 - Prob. 57TQCh. 17 - Prob. 58TQCh. 17 - Prob. 59TQCh. 17 - Prob. 60TQCh. 17 - Prob. 61TQCh. 17 - Prob. 62TQCh. 17 - Prob. 63TQCh. 17 - Prob. 64TQCh. 17 - Prob. 65TQCh. 17 - Prob. 66TQCh. 17 - Prob. 67TQCh. 17 - Prob. 68TQCh. 17 - Prob. 69TQCh. 17 - Prob. 70TQCh. 17 - Prob. 71TQCh. 17 - Prob. 72TQCh. 17 - Prob. 73TQ
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- QUESTION NO. 1 Patients with the rare genetic disease xeroderma pigmentosum (XP) are very sensitive to light and are highly susceptible to skin cancers. The study of such patients has enhanced our knowledge of DNA repair because XP is caused by defective DNA repair nucleotide excision repair. (A variant, XP-V, is deficient in postreplication repair.) In nucleotide excision repair A. removal of the damaged bases occurs on only one strand of the DNA. B. only thymine dimers generated by UV light can be removed . C. the excision nuclease is an exonuclease. D. a single multifunctional enzyme carries out the repair process. E. only the damaged nucleotides are removed. QUESTION NO.2 Homologous recombination: A. occurs only between two segments from the same DNA molecule. B. requires that a specific DNA sequence be present. C. requires one of the duplexes undergoing recombination be nicked in both strands. D. involves a…arrow_forwardEnzymes isolated from bacteria that cut DNA at specificsequences are called ____________________.arrow_forwardQuestion 49 The Sanger method of DNA sequencing follows the principle of complementarity just like in the replication process. A) True B) Falsearrow_forward
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- What would you expect the functional properties of a riboswitch specific for the amino acid lysine to be?arrow_forwardQuestion 33 Given the electrophoresis profile of a Sanger sequencing result, what was the sequence of the original DNA sample used for sequencing? ddATP ddGTP ddCTP ddTTP A) GGTAACC в) ССААТGG GGTTACC D) CCATTGG | | | |arrow_forward_____________ are the linear sequences of nucleotides in an organism’s genetic information.arrow_forward
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