Human Heredity: Principles and Issues (MindTap Course List)
11th Edition
ISBN: 9781305251052
Author: Michael Cummings
Publisher: Cengage Learning
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Chapter 11, Problem 18QP
Replication involves a period of time during which DNA is particularly susceptible to the introduction of mutations. If
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Why is the replication of DNA referred to as a semiconservative process? What is the experimental evidence for the semiconservative nature of the process? What experimental results would you expect if replication of DNA were a conservative process?
Identify two important enzymes involved in replication.
Where does replication occur in the cell?
What is the product of replication?
Why is replication important to the cell and living organism?
What is the process of copying DNA called?
In terms of the new DNA strands that are generated, what are the differences between replication and conventional polymerase chain reaction?
Chapter 11 Solutions
Human Heredity: Principles and Issues (MindTap Course List)
Ch. 11.4 - Consumer products including bandages, cotton...Ch. 11.4 - Prob. 2EGCh. 11 - Prob. 1CSCh. 11 - Prob. 2CSCh. 11 - Prob. 3CSCh. 11 - Prob. 1QPCh. 11 - Achondroplasia is an autosomal dominant form of...Ch. 11 - Why is it almost impossible to directly measure...Ch. 11 - What are the factors that influence the mutation...Ch. 11 - Achondroplasia is a rare dominant autosomal defect...
Ch. 11 - Although it is well known that X-rays cause...Ch. 11 - Prob. 7QPCh. 11 - Bruce Ames and his colleagues have pointed out...Ch. 11 - Define and compare the following types of...Ch. 11 - If the coding region of a gene (the exons)...Ch. 11 - Two types of mutations discussed in this chapter...Ch. 11 - Prob. 12QPCh. 11 - A frameshift mutation is caused by a: a....Ch. 11 - In the gene-coding sequence shown here, which of...Ch. 11 - Prob. 15QPCh. 11 - Familial retinoblastoma, a rare autosomal dominant...Ch. 11 - Tay-Sachs disease is an autosomal recessive...Ch. 11 - Replication involves a period of time during which...Ch. 11 - Our bodies are not defenseless against mutagens...Ch. 11 - The cystic fibrosis gene encodes a chloride...
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- Why is DNA replication called semiconservative?arrow_forwardWhat is the importance of complementary base pairing to DNA replication?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_forward
- A circular molecule of DNA contains 1 million base pairs. If the rate of DNA synthesis at a replication fork is 100,000 nucleotides per minute, how much time will theta replication require to completely replicate the molecule, assuming that theta replication is bidirectional? How long will replication of this circular chromosome by rolling-circle replication take? Ignore replication of the displaced strand in rolling-circle replication.arrow_forwardIn eukaryotes, the DNA replication rate is 50 nucleotides per second. How long would the replication of a chromosome of 150 million base pairs take if eukaryotic chromosomes were replicated like those of prokaryotes? Actually, eukaryotic replication takes only several hours. How do eukaryotes achieve this high rate?arrow_forwardIn a DNA double helix, why doesn't an A or T form two hydrogen bonds (out of the three possible ) with G or C? Explain how DNA replication is bidirectional and discontinuous in nature?arrow_forward
- During DNA replication, the function of RNA primers is to Group of answer choices serve as a binding site for DNA ligase separate the two strands of the double helix to open replication "bubbles" serve as starting points for DNA strand elongation by DNA polymerase in the 3' - 5' direction prevent new-separated strands of DNA from rejoining serve as starting points for DNA strand elongation in the 5' - 3' direction by DNA polymerasearrow_forwardWhy must replication of DNA proceed in two opposite directions? And what differs about how DNA replication occurs in each direction?arrow_forwardThe speed of DNA replication at a replication fork is about 100 nucleotides per second in human cells. What is the minimum number of origins of replication that a human cell must have if it is to replicate its DNA once every 24 hours?arrow_forward
- If deoxyribonucleotides that lack the 3’-OH groups are added during the replication process, what do you expect will occur?arrow_forwardRegarding the process of DNA replication, it is correct to state that: a) Nucleosomes are maintained during the DNA polymerase-mediated replication process b) The phosphodiester bonds that join the nitrogenous bases maintain the integrity of the DNA strands c) DNA polymerase requires a previously annealed deoxynucleotide to add the next monomer being synthesized. d) The action of the helicase decreases the twist caused by the movement of the replication complex along the stretch of DNA e)arrow_forwardWhy does DNA replication need to be error-free? Why does the DNA need to be a “careful reader?” What is the importance of DNA replication to DNA’s function of storing genetic information?arrow_forward
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