Biology
12th Edition
ISBN: 9780134813448
Author: Audesirk, Teresa, Gerald, Byers, Bruce E.
Publisher: Pearson,
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Chapter 12, Problem 6FIB
Summary Introduction
Introduction:
DNA enzymes have a property of proofreading which prevents any mistake in a
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Sometimes mistakes are made during DNA replication. If uncorrected, these mistakes are called _________. When a single nucleotide is changed, this is called a(n)_________.
DNA ligase catalyzes the formation of a peptide bond without adding another nucleotide to the strand.
TRUE OR FALSE. I BELIEVE THIS IS TRUE. AM I CORRECT ?
A deamination occurs on the cytosine residue in the following DNA sequence. This cytosine residue happens to be methylated on the 5-position of the aromatic ring.
5'-GCATGG-3'.
(Note: the top strand is shown; this is the strand where the deamination occurs.) If the mutation is not repaired, and a round of DNA replication occurs, then the sequence of the newly- replicated complementary strand (i.e., the bottom strand) will be:
A. 5'-CCATGC-3
B. 5'-CCATAC-3'
C. 5'-CATACC-3'
D. 5'-GTATGG-3'
E. None of the above
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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- Why is DNA replication called semiconservative?arrow_forwardIn the DNA double-helix structure, the larger of the two grooves formed by the helical twist where certain base pairs are exposed is called the:arrow_forwardHow important and useful to the cell is the ability of the DNA to assume various forms? Why are these various forms necessary?arrow_forward
- Single-stranded regions of DNA are attacked by nucleases in the cell, yet portions of DNA are in a singlestranded form during the replication process. Explain.arrow_forwardEach new double helix will contain ___________ strand of DNA from the parent strand and ____________ strand of newly created DNA.arrow_forwardin DNA replication, if the template strand is 5’-ATCCGTGTAACCTT-3’, what is the sequence of the newly synthesized DNA strand? Write the sequence from 5’ to 3’.arrow_forward
- A student has drawn an enlarged portion of a DNA “ladder” model to show two of the nucleotides in greater detail (in the same orientation as they would occur in the ladder model). Which two nucleotides did the student draw?arrow_forwardZ-DNA derives its name from the zig-zag conformation of phosphate groups. What features of the DNA molecule allow this structure to form?arrow_forwardThe DNA molecules in eukaryotes including humans are negatively supercoiled while that in prokaryotes and viruses is positively supercoiled. (true/false, explain)arrow_forward
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