Answer
Six chromosomes are drawn. They are duplicated (homologous pairs are shown). There are 12 chromatids, so six pairs of sister chromatids.
Work Step by Step
In the drawing, the microtubules attach to one of the two sister chromatids.
Campbell Biology (12th Edition)
by Jane B. Reece, Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky
Published by
Pearson
ISBN 10:
0135188741
ISBN 13:
978-0-13518-874-3
Chapter 12 - 12.2 - Concept Check - Page 244: 1
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