Biology

The correct answer is: D.The chromosomes start moving towards the poles. This event marks the end of metaphase and the beginning of anaphase.

Here’s the reasoning behind each option:

A.The nuclear envelope begins to break down: This happens earlier, during prophase, not at the end of metaphase.

B.The spindle fibers disappear: Spindle fibers start to break down at telophase, not at the end of metaphase.

C.The cell enters cytokinesis: Cytokinesis occurs after telophase, not at the end of metapha...