Biology (11th Edition)

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

Chapter 11 - Sexual Reproduction and Meiosis - Review Questions - Synthesize: 1c


Please see the image. During metaphase I, the cell is now tetraploid (4n) with sister chromatids attached to one another (see the X-shapes). Different homologs are indicated with different kinds of lines, and maternal and paternal chromosomes are indicated with M and P, respectively. As shown, homologs do not have to line up in any particular order.

Work Step by Step

To get to this drawing, remember that by this point DNA has been replicated, so sister chromatids must be shown. Also, the same distinction should be used to show the 3 different pairs of homologs as well as a designation for the chromosomes originating from each of the parents.
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