Biology (11th Edition)

Published by McGraw-Hill Education
ISBN 10: 1-25918-813-2
ISBN 13: 978-1-25918-813-8

Chapter 28 - Prokaryotes - Review Questions - Apply: 2

Answer

B.

Work Step by Step

A. is wrong since the DNA exchange hinted at in the question is from one kind of cell to another, not mother to daughter as in A. B. is wrong since not all horizontal DNA transfer in bacteria requires cell-cell contact, as when a cell takes up a piece of naked DNA from the environment, and D. can be excluded since plasmids are also not involved in all horizontal transfers between bacteria.
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