Question

during which phase of mitosis does the nuclear membrane break down?
metaphase
telophase
anaphase
prophase

Explanation:

In mitosis, the nuclear membrane breaks down during prophase. This is an early - stage event that allows the chromosomes to interact with the mitotic spindle. Metaphase is when chromosomes align at the equator, anaphase is for chromosome separation, and telophase is for nuclear membrane re - formation.

Answer:

Prophase