Study Guide for Campbell Biology
Study Guide for Campbell Biology
11th Edition
ISBN: 9780134443775
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece, Martha R. Taylor, Michael A. Pollock
Publisher: PEARSON
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Chapter 16, Problem 19TYK

You are trying to test your hypothesis that DNA replication is conservative— that is, that the parental strands separate, newly made complementary strands join together to make a new DNA molecule, and the parental strands then rejoin. You take a sample of E. coli grown in a medium containing only heavy nitrogen (15N) and transfer it to a medium containing light nitrogen (14N). After allowing time for only one DNA replication, you centrifuge a sample and compare the density band(s) formed to the bands formed from bacteria grown on either normal 14N or 15N medium. Which band location would support your hypothesis of conservative DNA replication?

Chapter 16, Problem 19TYK, You are trying to test your hypothesis that DNA replication is conservative that is, that the

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