Genetic Analysis: An Integrated Approach (2nd Edition)
2nd Edition
ISBN: 9780321948908
Author: Mark F. Sanders, John L. Bowman
Publisher: PEARSON
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Chapter 7, Problem 21P
Raymond Rodriguez and colleagues demonstrated conclusively that
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Suppose that replication is initiated in a medium containing moderately radioactive tritiated thymine. After a few minutes of incubation, the bacteria are transferred to a medium containing highly radioactive tritiated thymidine. Sketch the autoradiographic pattern that would be seen for (a) undirectional replication and (b) bidirectional replication, each from a single origin.
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Chapter 7 Solutions
Genetic Analysis: An Integrated Approach (2nd Edition)
Ch. 7 - What results from the experiments of Frederick...Ch. 7 - 7.2 Explain why Avery, MacLeod, and McCarty’s in...Ch. 7 - 7.3 Hershey and Chase selected the bacteriophage...Ch. 7 - 7.4 Explain how the Hershey and Chase experiment...Ch. 7 - 7.5 One strand of a fragment of duplex DNA has the...Ch. 7 - 7.6 The principles of complementary base pairing...Ch. 7 - For the following fragment of DNA, determine the...Ch. 7 - 7.8 Figures present simplified depictions of...Ch. 7 - 7.9 Consider the sequence -ACGCTACGTC-.
What is...Ch. 7 - DNA polymerase III is the main DNA-synthesizing...
Ch. 7 - Explain how RNA participates in DNA replication.Ch. 7 - A sample of double-stranded DNA is found to...Ch. 7 - Bacterial DNA polymerase I and DNA polymerase III...Ch. 7 - Diagram a replication fork in bacterial DNA and...Ch. 7 - Prob. 16PCh. 7 - Which of the following equalities is not true for...Ch. 7 - List the order in which the following proteins and...Ch. 7 - Two viral genomes are sequenced, and the following...Ch. 7 - Matthew Meselson and Franklin Stahl demonstrated...Ch. 7 - Raymond Rodriguez and colleagues demonstrated...Ch. 7 - 7.22 Joel Huberman and Arthur Riggs used pulse...Ch. 7 - 7.23 Why do the genomes of eukaryotes, such as...Ch. 7 - Bloom syndrome (OMIM 210900) is an autosomal...Ch. 7 - 7.25 How does rolling circle replication (see...Ch. 7 - Telomeres are found at the ends of eukaryotic...Ch. 7 - A family consisting of a mother (I-1), a father...Ch. 7 - In a dideoxy DNA sequencing experiment, four...Ch. 7 - Prob. 29PCh. 7 - Using an illustration style and labeling similar...Ch. 7 - A PCR reaction begins with one double-stranded...Ch. 7 - Prob. 32PCh. 7 - Three independently assorting VNTR markers are...Ch. 7 - 7.34 A sufficient amount of a small DNA fragment...Ch. 7 - Prob. 35P
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- Using 14N isotope medium for DNA replication instead of 15N, what would be observed ifDNA replication were conservative in one cycle of replication/in three cycles? How aboutdispersive replication in one cycle, in three cycles?arrow_forwardWhy were Meselson and Stahl unable to distinguish between the dispersive and the semiconservative models following only one round of DNA replication?arrow_forwardWhat are the three models of DNA replication? With the aid of illustrations, show how the Meselson Stahl experiment come to the conclusion of one model of DNA replication. Is DNA replication bidirectional? How did you arrive at this conclusion? Explain the bacterial replication model that supports this conclusion.arrow_forward
- 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?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_forwardhe Meselson and Stahl experiment provided conclusive evidence for the semiconservative replication of DNA in E. coli. What pattern of bands would they have observed in a CsCl gradient after one generation if replication was conservative? a heavy, a light and an intermediate band one heavy and one light band (no intermediate) one intermediate band one light band one heavy bandarrow_forward
- How did the results prove the semiconservative model of DNA replication? Explainarrow_forwardWhen DNA replication was investigated by using heavy, N15 DNA to mark the original molecules, and light, N14 DNA to mark the newly synthesized molecules, one band was found in the middle of the centrifuge column after one round of replication, and two bands were found (middle and top of column) after 2 rounds of replication. Imagine that after 1 round of replication 2 bands were found, one at the bottom and one at the top of the centrifuge column. In that case, what model of DNA replication would have been supported? The dispersive model The conservative model The Franklin model The semi-conservative modelarrow_forwardSuppose that 28% of the nucleotides in a DNA moleculeare deoxythymidine 5′- monophosphate, and that duringDNA replication the percentage amounts of availablenucleotide bases are 22% A, 22% C, 28% G, and 28% T.Which base would be depleted first in the replicationprocess?arrow_forward
- If DNA replication followed the dispersive model of replication, how would the outcomes of the Meselson-Stahl experiment change? Describe the composition of DNA samples after one and two rounds of replication, and how this is different from the findings of the original experiment.arrow_forwardThe Meselson-Stahl experiment provided strong evidence that DNA replication was conservative, by alternately growing bacteria in medium with heavy 15N and light 14N. If DNA replication were dispersive, what result would Meselson and Stahl have observed after the first round of DNA replication in light nitrogen? Group of answer choices Two bands, one at the location for pure 15N and one at the location for pure 14N. One band, located half way between the locations for pure 15N and pure 14N. Two bands, one at the location for pure 15N and one located halfway between the locations for pure 15N and pure 14N. None of these Three bands, one at the location for pure 15N, one at the location for pure 14N, and one at a location halfway between.arrow_forwardConsider the experiment conducted by Meselson and Stahl in which they used 14N and 15N in cultures of E. coli and equilibrium density gradient centrifugation. Draw pictures to represent the bands produced by bacterial DNA in the centrifuge tube before the switch to medium containing 14N and after one, two, and three rounds of replication in that medium. Use separate sets of drawings to show the bands that would appear if replication were (a) semiconservative; (b) conservative; (c) dispersive.arrow_forward
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