Campbell Biology (10th Edition)

Published by Pearson
ISBN 10: 0321775651
ISBN 13: 978-0-32177-565-8

Chapter 15 - 15.3 - Concept Check: 1

Answer

The physical basis for having recombinant offspring is the the physical crossing over events-- the chiasmata --which form in meiosis I. Homologous chromosomes paired in prophase I come apart at matching points and reattach to each other (hence "crossing" over, which in this case is literal).

Work Step by Step

Review Ch. 13 and see the physical exchange of DNA between non-sister chromatids. This is illustrated several times in the chapter.
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.