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?
What result would Meselson and Stahl have obtained if the replication of DNA were conservative (i.e., the parental double helix stayed together)? Give the expected distribution of DNA molecules after 1.0 and 2.0 generations for conservative replication.
Is 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?
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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- 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_forwardWho experimentally prove that DNA replication is semi conservative?arrow_forwardIn terms of the new DNA strands that are generated, what are the differences between replication and conventional polymerase chain reaction?arrow_forward
- In terms of new DNA strands that are generated, what are the differences between replication and conventional polymerase chain reactions?arrow_forwarda) If you isolated DNA from the ear and the tail of the same mouse, would you expect the DNA, isolated form the two tissue types, to be the same? Why? (2) b) Provide one difference between DNA replication in eukaryotes and prokaryotes with regards to their origin(s) of replication. (1) For the toolbar, press ALT+F10 (PC) or ALT+FN+F10 (Mac). 14px E EY A Y BIVS Paragraph Arial ABC x² X2 ?次T Te 田田国王 用 图 +]arrow_forwardWhat would Meselson and Stahl have seen after 1,2, and 3 generations of replication if the dispersive model of DNA replication were correct?arrow_forward
- What is the purpose of the dideoxynucleotide triphosphates in the Sanger sequencing reaction? A) The ddNTP prevents the denatured DNA in a sequencing reaction from re-forming a double helix. B The ddNTP terminates synthesis on a strand after it is incorporated by DNA polymerase. (C) The ddNTP acts as a catalyst for the DNA polymerase during in vitro DNA replication. The ddNTP is necessary to act as a primer in a sequencing reaction.arrow_forwarda) If you isolated DNA from the ear and the tail of the same mouse, would you expect the DNA, isolated from the two tissue types, to be the same? Why? b) Provide one difference between DNA replication in eukaryotes and prokaryotes with regard to their origin (s) of replication.arrow_forwardIn the Meselson-Stahl experiment on DNA replication, what fraction of the DNA was composed of one light strand and one heavy strand ("hybrid") after one generation of growth in medium containing 14N? After two generations of growth in a medium containing 14N? What fraction of hybrid DNA is expected after n generations of growth in a medium containing 14N?arrow_forward
- a) "Out of three E.coli DNA polymerases, DNA polymerases 3 has a high processivity and rate of polymerization and therefore better suited for replication of the genome" What is meant by processivity? how does the DNA polymerase 3 maintain high processivity? b) What is a replication fork ?. Give the protein/enzymes of a replication fork and describe their function?arrow_forwardWhat is sheared DNA?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_forward
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