Biology (11th Edition)

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

Chapter 17 - Biotechnology - Review Questions - Understand: 2

Answer

B.

Work Step by Step

A. is wrong because DNA is actually negatively charged, and D. can be eliminated since the dye shows where DNA is but does not determine movement in the gel. C. is wrong because, on average, most sequences have about the same weight per unit length, so separation is based on size/length of fragments (B.).
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