Question

what structure forms during prophase to move chromosomes?
nucleus
spindle apparatus
centriole
cytoskeleton

Explanation:

To solve this, we analyze each option:

• Nucleus: Disintegrates during prophase, not for moving chromosomes.
• Spindle apparatus: Forms in prophase (of mitosis/meiosis) to attach to chromosomes and move them.
• Centriole: Involved in organizing spindle fibers but not the structure that moves chromosomes directly.
• Cytoskeleton: A general cell structure, not specific to chromosome movement in prophase.

Answer:

B. Spindle apparatus