Question

question 7 of 10
a cell is in m - phase, undergoing mitosis. which event occurs directly after the nucleuss chromatin condenses into chromosomes?
a. the nucleuss chromosomes relax into a mass of chromatin.
b. the chromosomes line up across the center of the cell.
c. spindle fibers attach to the centromeres.
d. the sister chromatids separate.

Explanation:

In mitosis, after chromatin condenses into chromosomes (prophase), spindle - fiber attachment to centromeres occurs in prometaphase before chromosomes line up (metaphase) and sister - chromatid separation (anaphase). Chromosome relaxation into chromatin is at the end of mitosis (telophase).

Answer:

C. Spindle fibers attach to the centromeres.