Where are the motor proteins that move chromosomes toward the poles of the mitotic spindle located?
A)on the kinetochores only
B)at the centrosomes only
C)on the kinetochores and at the centrosomes
D)along the length of kinetochore microtubules only

Question

Quizplus · Accepted Answer

Motor proteins that move chromosomes toward the poles of the mitotic spindle are located both on the kinetochores and at the centrosomes. The motor proteins on the kinetochores interact with the microtubules of the spindle fibers and move the chromosomes toward the poles, while the motor proteins at the centrosomes help to organize and stabilize the spindle fibers themselves. Therefore, both locations are necessary for proper chromosome movement during mitosis.

Where Are the Motor Proteins That Move Chromosomes Toward the Poles