In the process of chromosome separation,how do microtubules maintain contact with the kinetochores and shorten at the same time?
A)Motor proteins move chromosomes down the microtubular structures of the mitotic spindle.
B)Actin microfilaments cause the microtubular proteins to slide past each other.
C)The centrosomes move apart,so the microtubular proteins do not need to shorten.
D)The centrosomes create the shortening/depolymerization of the microtubular proteins.

Question

Quizplus · Accepted Answer

Motor proteins, specifically kinetochore motor proteins like dynein and kinesin, maintain contact between the microtubules and kinetochores while simultaneously causing the microtubules to shorten (depolymerize) from the kinetochore end. This pulling force towards the opposite poles of the spindle apparatus allows for chromosome separation.

In the Process of Chromosome Separation,how Do Microtubules Maintain Contact