GENETIC ANALYSIS: INTEGRATED - ACCESS
3rd Edition
ISBN: 9780135349298
Author: Sanders
Publisher: PEARSON
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Chapter 7, Problem 20P
Matthew Meselson and Franklin Stahl demonstrated that
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Consider 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.
How did the results prove the semiconservative model of DNA replication? Explain
Describe the early models of DNA replication that were investigated and explain how research by Meselson and Stahl supported the current model . Explain the role of each of the following in DNA replication.
- helicase
- Gyrase
- RNA primer
- DNA polymerase
- Okazaki fragments
- DNA ligase
Chapter 7 Solutions
GENETIC ANALYSIS: INTEGRATED - ACCESS
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 - There is a problem completing the replication of...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 - Prob. 33PCh. 7 - 7.34 A sufficient amount of a small DNA fragment...Ch. 7 - You are participating in a study group preparing...Ch. 7 - Prob. 36PCh. 7 - The following diagram shows the parental strands...Ch. 7 - Go to the OMIM website...
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- The 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_forwardCite evidence from Meselson and Stahl’s experiment that enabled scientists to differentiate between semiconservative replication of DNA and alternative models.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_forward
- a) Explain semi-conservative modelmof DNA replication b) discuss initiation in DNA replication and explain why it is a tightly controlled process.arrow_forwardIf 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_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
- AKS 5b: Which model accurately represents the semi-conservative nature of DNA replication? * AA AA AA AA АВ ВА AA BB AA AA AB AC Figure A Figure B Figure C Figure D Figure A Figure B Figure C Figure D AKS 5b: Use the models below to answer the question that follows. Which model and explanation best represents the semiconservative nature of DNA? *arrow_forwardAn Investigator obtains a bacterial temperature-sensitive mutation that affects a step in the process of DNA replication at 42°C but not at 30°C. She grows the cells at 30°C and, upon shifting the temperature to 42°C, she discovers that the DNA remains double- stranded at the replication forks. What is the likely target affected by the temperature-sensitive mutation? DNA Ligase DNA polymerase lII primase DNA gyrase Single-stranded DNA-binding protein (SSB)arrow_forwardIn both leading and lagging strand synthesis, DNA replication always proceeds in a certain direction. What direction is this? Explain how oligonucleotide primers in the Polymerase Chain Reaction work (PCR)arrow_forward
- How many bands of DNA would be expected in Meselson and Stahl’s experiment after two rounds of conservative replication?arrow_forwardApproximately how many high-energy bonds does DNA polymerase use to replicate a bacterial chromosome (ignoring helicase and other enzymes associated with the replication fork)? compared with its own dry weight of 10–12 g, how much glucose does a single bacterium need to provide enough energy to copy its DNA once?arrow_forwardDescribe, in detail, causes for mutations that occur during replication. For each, use detail to describe how the mutation would occur, classify the type of mutation that results, and the effect it may have on the cell. What are two causes for mutations during replication? What is one cause for mutations at the end of replication? Differentiate between transition and transversion mutations. What are they, examples? How do point deletions/insertions lead to frameshift mutations- your answer should include what a “frame” is, what a codon is and how codons are responsible for making aa chains?arrow_forward
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