The centrosome is the microtubule organizing center for the mitotic spindle, which is responsible for the separation of chromosomes during cell division. It is not a region of the chromosome where sister chromatids or kinetochores attach. However, the centrosome does play a crucial role in attaching microtubules to the chromosomes during mitosis. Therefore, choice D is the best answer.

Solved

The Centrosome Is

Question 41

Multiple Choice

The centrosome is:

A) a region of the chromosome where sister chromatids are attached to each other.
B) a region of the chromosome where kinetochores attach.
C) a region of the chromosome where microtubules attach to chromosomes during mitosis.
D) the microtubule organizing center for the mitotic spindle.
E) All of these choices are correct.

Correct Answer: