BIOLOGY:LIFE ON EARTH-W/ACCESS
11th Edition
ISBN: 9780134669076
Author: Audesirk
Publisher: PEARSON
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Chapter 12, Problem 2MC
What happens at the conclusion of
The daughter double helices each consist of one original DNA strand and one new DNA strand.
One daughter double helix consists of the two original DNA strands and the other daughter double helix consists of two new DNA strands.
Each resulting DNA strand consists of part of one of the original DNA strands and part of a new DNA strand.
The resulting DNA daughter strands contain
nucleotide sequences that were not present in the parental DNA strands.
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What happens at the conclusion of DNA replication?a. The daughter double helices each consist of one original DNA strand and one new DNA strand.b. One daughter double helix consists of the two original DNA strands and the other daughter double helix consists of two new DNA strands.c. Each resulting DNA strand consists of part of one of the original DNA strands and part of a new DNA strand.d. The resulting DNA daughter strands contain nucleotide sequences that were not present in the parental DNA strands.
DNA replication is said to be semiconservative becausea. each new DNA molecule contains one new strand and one old one.b. every other new DNA molecule contains two old strands.c. each new DNA strand contains two new strands.d. every other new DNA molecule contains one new strand and one old one.
Which of the following steps in DNA replication would occur second?
1.DNA molecule separates into two template strands.2.Complimentary nucleotides are added to each template strand.3.DNA molecule unwinds.4.Two DNA molecules, each with a template strand and a new strand, are formed.
Chapter 12 Solutions
BIOLOGY:LIFE ON EARTH-W/ACCESS
Ch. 12 - 1. If a parental DNA strand has the base sequence...Ch. 12 - 2. What happens at the conclusion of DNA...Ch. 12 - An insertion mutation occurs when a nucleotide is...Ch. 12 - The rungs of the DNA double helix consist of any...Ch. 12 - The “rungs” of the DNA double helix are held...Ch. 12 - 1. DNA consists of subunits called_________. Each...Ch. 12 - The subunits of DNA are assembled by linking...Ch. 12 - The “base pairing rule” in DNA is that adenine...Ch. 12 - 4. When DNA is replicated, two new DNA double...Ch. 12 - The DNA double helix is unwound by an enzyme...
Ch. 12 - 6. Sometimes mistakes are made during DNA...Ch. 12 - Describe the experimental evidence that DNA is the...Ch. 12 - 2. Draw the general structure of a nucleotide....Ch. 12 - Describe the structure of DNA. Where are the...Ch. 12 - How is information encoded in the DNA molecule?Ch. 12 - 5. Describe the process of DNA replication.
Ch. 12 - How do mutations occur? Describe the principal...Ch. 12 - 1. In an alternate universe, although proteins are...Ch. 12 - Prob. 2AC
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- What is the function of DNA polymerase? a. It degrades DNA in cells. b. It adds RNA nucleotides to a new strand. c. It coils DNA around histones to form chromosomes. d. It adds DNA nucleotides to a replicating strand. e. None of these.arrow_forwardHow does DNA replication occur in a precise manner to ensure that identical genetic information is put into the new chromatid? See Figures 8.12 and 8.13. FIGURE 8.12 In DNA replication, the two polynucleotide strands uncoil, and each is a template for synthesizing a new strand. A replicated DNA molecule contains one new strand and one old strand. This mechanism is called semiconservative replication. FIGURE 8.13 A close-up look at the process of DNA replication. (a) As the strands uncoil, bases are added to the newly synthesized strand by complementary base pairing with bases in the template strand. The new bases are linked together by DNA polymerase. (b) DNA synthesis can proceed only in the 5 3 direction; newly synthesized DNA on one template strand is made in short segments and linked together by the enzyme DNA ligase.arrow_forwardWatch this video (http://openstaxcollege.org/l/DNArep) to learn about DNA replication. DNA replication proceeds simultaneously at several sites on the same molecule. What separates the base pair at the start of DNA replication?arrow_forward
- Why is DNA replication called semiconservative?arrow_forwardAs DNA replication begins, chromatin becomes less compact. Why?arrow_forwardSuppose strong phosphodiester bonds were found between the bases on opposite strands of a DNA molecule, and weak H-bonds were found between the nucleotides within each polynucleotide strand. Would DNA replication work as before? Why or why not?arrow_forward
- What is the correct order of the stages of DNA synthesis? A) Unwinding the DNA, synthesis of a complimentary strand, joining the two DNA strands B) Unwinding the DNA, joining the two DNA strands, synthesis of a complimentary strand C) Synthesis of a complimentary strand, unwinding the DNA, joining the two DNA strands D) Joining the two DNA strands, synthesis of a complimentary strand, unwinding the DNAarrow_forwardWhat is the end result of DNA replication?arrow_forwardHow does DNA make a copy of itself? and what are the roles of proteins in DNA replication?arrow_forward
- How does DNA replication end?arrow_forwardWhat happens to DNA replication if DNA polymerase III and DNA polymerase I are defective?arrow_forwardIllustrate some steps involved in DNA replication :Suppose the following base sequence was found in a segment of one strand of a DNA molecule: 3’ A-A-T-A-C-C-T-C-C-T-A-A-C-T 5’ What would be the bases in the complementary strand? Label the 3’ and the 5’ ends. Illustrate the DNA molecule below. Label the 3’ and the 5’ ends of both strands. Separate the above DNA molecule up to the seventh base. Add one primer for the leading strand complementary to the first base Adenine of the template strand. Add one primer for the lagging strand complementary to the seventh base Adenine of the template strand. Illustrate the DNA molecule. Label the 3’ and 5’ ends. Elongate the new strands up the seventh base by adding DNA bases complementary to the template strand. Illustrate the resulting DNA molecule. Label the 3’ and the 5’ ends of the template strands and the complementary strands. Elongate the new strands up the seventh base by adding DNA bases complementary to the template strand. Illustrate…arrow_forward
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