Which of the following statements about the microtubules that grow out from the centrosomes is true?
A) They pull the nuclear envelope apart.
B) They pull the centrosomes together.
C) They eventually become kinetochores.
D) They eventually attach to centromeres.

Question

Quizplus · Accepted Answer

The microtubules that grow out from the centrosomes eventually attach to the centromeres of the chromosomes during mitosis. This attachment is essential for proper chromosome segregation and the formation of the spindle fibers that pull the sister chromatids apart. Option A is incorrect because microtubules do not directly pull apart the nuclear envelope. Option B is incorrect because the centrosomes are already separated at the beginning of mitosis and the microtubules do not pull them together. Option C is incorrect because kinetochores are protein structures that form at the centromeres, not from the microtubules themselves.

Which of the Following Statements About the Microtubules That Grow