Following the attachment of spindle microtubules to kinetochores,chromosomes are moved around by
A)myosin motor proteins.
B)histones.
C)elongation and shortening of microtubules.
D)motor activity taking place in the centrosomes.

Question

Quizplus · Accepted Answer

Chromosomes are moved around by the elongation and shortening of microtubules attached to the kinetochores. This movement is mediated by the motor proteins dynein and kinesin, which walk along microtubules and use ATP hydrolysis to generate force and move the chromosomes towards the spindle poles. Myosin motor proteins are not involved in this process, and histones are involved in packaging and maintaining the structure of DNA, but not in chromosome movement. Similarly, while motor activity takes place in the centrosomes, this is not the mechanism by which chromosomes are moved around during mitosis.

Following the Attachment of Spindle Microtubules to Kinetochores,chromosomes Are Moved