Biology (MindTap Course List)
11th Edition
ISBN: 9781337392938
Author: Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg
Publisher: Cengage Learning
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Chapter 12.3, Problem 1C
How did the ability to distinguish old and newly synthesized DNA strands enable Meselson and Stahl to verify that
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Why were Meselson and Stahl unable to distinguish between the dispersive and the semiconservative models following only one round of DNA replication?
Who experimentally prove that DNA replication is semi conservative?
What would Meselson and Stahl have seen after 1,2, and 3 generations of replication if the dispersive model of DNA replication were correct?
Chapter 12 Solutions
Biology (MindTap Course List)
Ch. 12.1 - Summarize the evidence that accumulated during the...Ch. 12.1 - Prob. 2LOCh. 12.1 - Prob. 1CCh. 12.1 - Prob. 2CCh. 12.2 - Explain how nucleotide subunits link to form a...Ch. 12.2 - Describe how the two strands of DNA are oriented...Ch. 12.2 - Prob. 5LOCh. 12.2 - Prob. 1CCh. 12.2 - Prob. 2CCh. 12.2 - Prob. 3C
Ch. 12.3 - Cite evidence from Meselson and Stahls experiment...Ch. 12.3 - Prob. 7LOCh. 12.3 - Explain the complexities of DNA replication that...Ch. 12.3 - Discuss how enzymes proofread and repair errors in...Ch. 12.3 - Prob. 10LOCh. 12.3 - How did the ability to distinguish old and newly...Ch. 12.3 - What feature of DNA structure causes DNA...Ch. 12.3 - What is the reason that eukaryotic cells require...Ch. 12 - When Griffith injected mice with a combination of...Ch. 12 - Which of the following inspired Avery and his...Ch. 12 - In the Hershey-Chase experiment with...Ch. 12 - The two complementary strands of the DNA double...Ch. 12 - If a segment of DNA is 5 CATTAC 3, the...Ch. 12 - Each DNA strand has a backbone that consists of...Ch. 12 - The experiments in which Meselson and Stahl grew...Ch. 12 - The statement DNA replicates by a semiconservative...Ch. 12 - Topoisomerases (a) synthesize DNA (b) synthesize...Ch. 12 - A lagging strand forms by (a) joining primers (b)...Ch. 12 - The immediate source of energy for DNA replication...Ch. 12 - Which of the following statements about eukaryotic...Ch. 12 - Prob. 13TYUCh. 12 - Prob. 14TYUCh. 12 - Prob. 15TYUCh. 12 - INTERPRET DATA In the Hershey-Chase experiment,...Ch. 12 - EVOLUTION LINK How does DNA being the universal...
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- What observation in the Meslson and Stahl experiment to decipher the DNA replication model distinguishes the semi-conservative from the dispersive mode of replication? Explain.arrow_forwardIf DNA replication were dispersive instead of semi-conservative how many "bands" would Meselson and Stahl have expected to see in their experiment after 4 rounds of replication in "light" nucleotides?arrow_forwardHow did Kornberg assess the fidelity of DNA polymerase I in copying a DNA template?arrow_forward
- What key structural features of the DNA molecule underlie its ability to be faithfully replicated?arrow_forwardIs it biologically possible for DNA to undergo replication in vivo, without the lagging and the leading strands? In PCR, we also start with an antiparallel strand of DNA. Does this also mean that replication is semi-discontinuous in in vitro replication?arrow_forwardHow did Taq DNA polymerase acquire its name?arrow_forward
- In the Meselson–Stahl experiment thatestablished the semiconservative nature of DNA replication,the extraction method produced short fragments of DNA. Whatsort of results might have been obtained with longer piecesof DNA?arrow_forwardBriefly describe how the use of different nitrogen isotopes allowed Meselson and Stahl to discern that DNA replication is semi-conservative.arrow_forwardWho presented the evidence that semiconservative replication also occurs in eukaryotic organisms ?arrow_forward
- What is an Okazaki fragment? In which strand of replicating DNA are Okazaki fragments found? Based on the properties of DNA polymerase, why is it necessary to make these fragments?arrow_forwardHow does proofreading differ from later DNA repair mechanisms in terms of timing and the proteins involved?arrow_forwardIn terms of new DNA strands that are generated, what are the differences between replication and conventional polymerase chain reactions?arrow_forward
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