Concepts of Genetics (12th Edition)
12th Edition
ISBN: 9780134604718
Author: William S. Klug, Michael R. Cummings, Charlotte A. Spencer, Michael A. Palladino, Darrell Killian
Publisher: PEARSON
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Chapter 11, Problem 10PDQ
Kornberg showed that
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Kornberg showed that nucleotides are added to the 3' end of eachgrowing DNA strand. In what way does an exposed 3'-OH groupparticipate in strand elongation?
How are deoxyribonucleoside triphosphates (precursors of daughter DNA strands) and ribonucleoside triphosphates (precursors of RNA strand) differ from each other?
Why do higher salt concentrations stabilize the DNA double helix? Or What aspect of the structure of double-stranded DNA destabilizes the helix in the absence of salt?
Chapter 11 Solutions
Concepts of Genetics (12th Edition)
Ch. 11 - In the Meselson-Stahl experiment, which of the...Ch. 11 - An alien organism was investigated. When DNA...Ch. 11 - Why might mutations in genes encoding telomerase...Ch. 11 - Although the brother is an immunologically matched...Ch. 11 - Prob. 3CSCh. 11 - HOW DOWE KNOW? In this chapter, we focused on how...Ch. 11 - CONCEPT QUESTION Review the Chapter Concepts list...Ch. 11 - Compare conservative, semiconservative, and...Ch. 11 - Describe the role of 15N in the MeselsonStahl...Ch. 11 - Predict the results of the experiment by Taylor,...
Ch. 11 - What are the requirements for in vitro synthesis...Ch. 11 - In Kornbergs initial experiments, it was rumored...Ch. 11 - How did Kornberg assess the fidelity of DNA...Ch. 11 - Which characteristics of DNA polymerase I raised...Ch. 11 - Kornberg showed that nucleotides are added to the...Ch. 11 - What was the significance of the polA1 mutation?Ch. 11 - Summarize and compare the properties of DNA...Ch. 11 - List and describe the function of the ten subunits...Ch. 11 - Distinguish between (a) unidirectional and...Ch. 11 - List the proteins that unwind DNA during in vivo...Ch. 11 - Define and indicate the significance of (a)...Ch. 11 - Outline the current model for DNA synthesis.Ch. 11 - Why is DNA synthesis expected to be more complex...Ch. 11 - Suppose that E. coli synthesizes DNA at a rate of...Ch. 11 - Several temperature-sensitive mutant strains of E....Ch. 11 - While many commonly used antibiotics interfere...Ch. 11 - Describe the end-replication problem in...Ch. 11 - Many of the gene products involved in DNA...Ch. 11 - In 1994, telomerase activity was discovered in...Ch. 11 - The genome of D. melanogaster consists of...Ch. 11 - Prob. 26ESPCh. 11 - DNA polymerases in all organisms add only 5...Ch. 11 - Assume that the sequence of bases shown below is...Ch. 11 - Reiji and Tuneko Okazaki conducted a now classic...Ch. 11 - Consider the drawing of a dinucleotide below. (a)...Ch. 11 - To gauge the fidelity of DNA synthesis, Arthur...
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- Considering that DNA is synthesized in the 5' to 3' direction, which direction must DNA polymerase travel along the template strand: 5' to 3' or 3' to 5' ?arrow_forwardWhich strand(s) in the DNA Replication Fork depicted below represent the parent strands?arrow_forwardA solution contains DNA polymerase and the Mg ²+ salts of dATP, dGTP, dCTP, and TTP. The following DNA molecules are added to aliquots of this solution. Which of them would lead to DNA synthesis? (a) A single-stranded closed circle containing 1000 nucleotide units. (b) A double-stranded closed circle containing 1000 nucleotide pairs. (c) A single-stranded closed circle of 1000 nucleotides base-paired to a linear strand of 500 nucleotides with a free 3' -OH terminus. (d) A double-stranded linear molecule of 1000 nucleotide pairs with a free 3’-OH group at each end.arrow_forward
- What role do deoxyribonucleotide triphosphates (dNTP) in DNA replication?arrow_forwardIf the DNA sequence A-T-T-G-G-C-C-T-A on an informational strand mutated and became A-C-T-G-G-C-C-T-A, what effect would the mutation have on the sequence of the protein produced?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
- What is the axial ratio (length:diameter) of a DNA molecule 20 μm long?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_forwardSometimes DNA polymerase makes a mistake, and the wrong nucleotide is added to the growing DNA strand. With regard to pyrimidines and purines, two general types of mistakes are possible. The addition of an incorrect pyrimidine instead of the correct pyrimidine (e.g., adding cytosine where thymine should be added) is called a transition. If a pyrimidine is incorrectly added to the growing strand instead of purine (e.g., adding cytosine where an adenine should be added), this type of mistake is called a transversion. If a transition or transversion is not detected by DNA polymerase, a mutation is created that permanently changes the DNA sequence. Though both types of mutations are rare, transition mutations are more frequent than transversion mutations. Based on your understanding of DNA replication and DNA polymerase, offer three explanations why transition mutations are more common.arrow_forward
- How many adenine bases are there if there are eight thousand cytosine bases in a fifteen thousand bp DNA?arrow_forwardIf a given double stranded DNA undergoes enzymatic hydrolysis targeting only the "a" side in the phosphodiester bond, what are the consequent nucleotide products of the hydrolysis of the 2 strands? (Please write the answers using only the letters corresponding to the bases with either the p or OH beside it to indicate the phosphate and OH groups respectively.) Sequence in one strand: TCGATCAGarrow_forwardWhat is the name of the enzyme that add nucleotides to a growing DNA strand? What kind of bonds does this enzyme form between the nucleotides?arrow_forward
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