Biology
12th Edition
ISBN: 9780134813448
Author: Audesirk, Teresa, Gerald, Byers, Bruce E.
Publisher: Pearson,
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Chapter 12, Problem 3MC
Summary Introduction
Introduction:
Mutation is defined as the permanent alteration in the
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The original DNA base sequence is
5’-AGCGTTACCGT-3’; a mutation in the DNA strand results in the base sequence 5’-AGGCGTTACCGT-3’. What can you conclude about the mutation?
A.
It is a frameshift mutation.
B.
It is a silent mutation.
C.
It is a deleterious mutation.
D.
It may result in a single amino acid change in the protein being coded for by this base sequence.
a mutation in dna that adds +1 ot -1 nucleotide or +2 or -2 nucleotides is called a______? (choose one answer only)
A. frameshift mutation
B. silent mutation
C. nonsense mutation
D. missense mutation
Why are mutations more likely to occur in repeated DNA sequences?
a. These bases are unstable
b. bases in the strand can form base pairs, generating loops that interfere with replication and repair enzymes.
c. The repeats hold onto the replication enzymes, causing base mismatches
d. the repeats attract and bind to mutagens, increasing the mutation rate
Chapter 12 Solutions
Biology
Ch. 12.1 - Which do you think would be more difficult to...Ch. 12.1 - If viral genetic material had the same structure...Ch. 12.1 - Prob. 1CYLCh. 12.1 - Prob. 2CYLCh. 12.2 - Muscles, Mutations, and Myostatin The sequence of...Ch. 12.2 - Prob. 1CYLCh. 12.3 - describe the process of DNA replication, including...Ch. 12.3 - explain why DNA replication is called...Ch. 12.3 - Muscles, Mutations, and Myostatin "Double-muscled"...Ch. 12.4 - How Much Genes Influence Athletic Prowess?
Ch. 12.4 - explain what mutations are and how they occur?Ch. 12.4 - explain why mutations are rare?Ch. 12.4 - describe the different types of mutations?Ch. 12.4 - Prob. 1TCCh. 12 - If a parental DNA strand has the base sequence...Ch. 12 - Prob. 2MCCh. 12 - Prob. 3MCCh. 12 - The rungs of the DNA double helix consist of a....Ch. 12 - Prob. 5MCCh. 12 - Prob. 1FIBCh. 12 - Prob. 2FIBCh. 12 - Prob. 3FIBCh. 12 - Prob. 4FIBCh. 12 - Prob. 5FIBCh. 12 - Prob. 6FIBCh. 12 - Prob. 1RQCh. 12 - Prob. 2RQCh. 12 - Describe the structure of DNA. Where are the...Ch. 12 - Prob. 4RQCh. 12 - Describe the process of DNA replication.Ch. 12 - How do mutations occur? Describe the principal...Ch. 12 - Prob. 1ACCh. 12 - Genetic information is encoded in the sequence of...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- Which statement regarding transitions and transversions is TRUE? a) An adenine to guanine change is a transversion b) Transversions are more commonly found in nature that are transitions c) A cytosine to guanine change is a transition d) Transversions cause a distortion in the DNA double helixarrow_forwardThe action of ultraviolet radiation on DNA to induce mutation is the Select one: a. methylation of base pairs b. deletion of base pairs c. formation of thymine dimers d. addition of base pairsarrow_forwardAre mutations harmful?a. Yes, because the DNA is damaged.b. No, because changes in the DNA result in better alleles.c. Yes, because mutated proteins don’t function.d. It depends on how the mutation affects the protein’s function.arrow_forward
- DNA fragments that are 500 bp, 1000 bp, and 2000 bp in length are separated by gel electrophoresis. Which fragment will migrate farthest in the gel? a. The 2000-bp fragment b. The 1000-bp fragment c. The 500-bp fragment d. All will migrate equal distances.arrow_forwardWhich of the following describes a Z-DNA helix? a. It is inhibited by methylation of bases b. It is favored by alternating GC sequence c. It has fewer base pairs per turn than the B-DNA d. It is favored in many solutions that are relatively devoid of waterarrow_forwardIn the dideoxy-sequencing reaction, what terminates DNA synthesis at a particular base? a. The absence of a base on the ddNTP halts the DNA polymerase. b. The ddNTP causes a break in the sugar–phosphate backbone. c. DNA polymerase will not incorporate a ddNTP into the growing DNA strand. d. The absence of a 3′-OH group on the ddNTP prevents the addition of another nucleotide.arrow_forward
- The problem of synthesizing the lagging strand, in the sense that DNA synthesis can only occur in one direction, is manifested inA. creation of primers every so often as more of the template strand isuntwisted.B. formation of shorter DNA strands called Okazaki fragments.C. the need for the enzyme ligase to link short DNA strands together.D. All of the above choices are correct.arrow_forwardRefer to Figure 2 and compare this with the DNA model in Figure 1. a. In what ways are they similar? b. In what ways are they different? c. What is the biological significance of such differences? Why is the DNA referred to as the genetic material?arrow_forwardA contig is a. a set of molecular markers used in gene mapping. b. a set of overlapping fragments that form a continuous stretch of DNA. c. a set of fragments generated by a restriction enzyme. d. a small DNA fragment used in sequencing.arrow_forward
- What is DNA polymerase? A. An enzyme that corrects mutations that arise during the replication of DNA B. An enzyme that seals any gaps that remain between bases of replicating strands of DNA C. Short, single strand of DNA that base-pairs with a specific DNA sequence D. An enzyme that carries out DNA replicationarrow_forwardDNA strands are anti-parallel and DNA polymerase can only synthesize DNA in a 5' to 3' direction. How does the enzyme synthesize both strands at the same time? A. The leading strand is sythesised in Okazaki fragments B. The lagging strand is synthesised in short Okazaki fragments. C. Only one strand is replicated. D. There are more than one DNA polymerase involved.arrow_forwardThe DNA double helix is stabilized by ... a) H-bonds between the sugar-phosphate backbones. b) ionic interactions between the sugar-phosphate backbones. c) H-bonds between complementary bases. d) a and c e) a, b and carrow_forward
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