Biology 12th Edition

Published by McGraw-Hill Education
ISBN 10: 0078024269
ISBN 13: 978-0-07802-426-9

Chapter 10 - Meiosis and Sexual Reproduction - Assess - Page 185: 10

Answer

b. meiosis I

Work Step by Step

Pairing of duplicated homologous chromosomes (called synapsis) occurs only during prophase I of meiosis I. This is when homologous chromosomes come together to form tetrads, and crossing over can occur. Mitosis and meiosis II do not involve homologous chromosome pairing—only separation of sister chromatids.
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