Campbell Biology Plus Masteringbiology
Campbell Biology Plus Masteringbiology
10th Edition
ISBN: 9780321775849
Author: Jane B. Reece, Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Robert B. Jackson
Publisher: PEARSON
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Chapter 16, Problem 6TYU

E. coli cells grown on, 15N medium are transferred to 14N medium and allowed to grow for two more generations (two rounds of DNA replication). DNA extracted from these cells is centrifuged. What density distribution of DNA would you expect in this experiment?

(A) one high-density and one low-density band

(B) one intermediate-density band

(C) one high-density and one intermediate-density band

(D) one low-density and one intermediate-density band

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