Campbell Biology (10th Edition)

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

Chapter 12 - Test Your Understanding - Level 3 - Synthesis/Evaluation - Page 250: 12

Answer

Kinetochore microtubules would probably have minus-end directed motor proteins since these would pull the chromosomes to the pole, to the newly forming nucleus. In contrast, non-kinetochore microtubules would have plus-end directed motor proteins to push the poles further apart.

Work Step by Step

The key here is to see the two activities of the spindle in separating the chromosomes: 1) Pulling the chromosomes apart to the poles and 2) Pushing the two poles further apart.
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.