In what way do kinetochore microtubules facilitate the process of splitting the centromeres?
A) They use motor proteins to hydrolyse the centromere at specific arginine residues.
B) They create tension by pulling toward opposite poles.
C) They slide past each other like actin microfilaments.
D) They phosphorylate the centromere, thereby changing its conformation.

Question

Quizplus · Accepted Answer

Kinetochore microtubules attach to the kinetochore proteins on the centromere of each chromosome and pull in opposite directions, creating tension that facilitates the splitting of the sister chromatids at the centromere. This is known as the process of anaphase. Option A is incorrect as motor proteins do not hydrolyze the centromere, and option C is also incorrect as kinetochore microtubules do not slide past each other. Option D is also incorrect as there is no evidence that kinetochore microtubules phosphorylate the centromere.

In What Way Do Kinetochore Microtubules Facilitate the Process of Splitting