Campbell Biology (11th Edition)

Published by Pearson
ISBN 10: 0-13409-341-0
ISBN 13: 978-0-13409-341-3

Chapter 24 - 24.4 - Concept Check - Page 521: 3

Answer

Crossing over mixes DNA from two parents on one chromosome and unequal crossing over can eliminate DNA, which is seen to have occurred in Fig. 24.18.

Work Step by Step

Review Ch. 13 and the process of crossing over. Then look up unequal crossing over and how it can change the contents of a chromosome. If there was no crossover, the hybrid chromosomes would only contain DNA from one parent or the other.
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