Question

Prophase is just one stage of mitosis. Which statement BEST describes what happens
during prophase stage of mitosis?
Chromosomes unwind, thin and become chromatin.
The nuclear membrane breaks apart.
The mitotic spindles shorten, pulling chromosomes apart.
The chromosomes align themselves along the center of the cell while attached to
microtubules.

Answer 1

Answer:

Prophase is stage one (I) of mitosis. One of the characteristic is that The nuclear membrane breaks apart.

Explanation:

Prophase is the longest stage of mitosis. It involves the breaking down of the nuclear membrane and the concentration of chromatin into chromosomes. Cells arrested in prophase and viewed under a microscope will have their chromosomes visible and with no nucleus. It is after prophase that metaphase is initiated. In this phase, the chromosomes begin to line up in the metaphase plate and the spindle fibers are fully formed.

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Answer 2

Answer:

The nuclear membrane breaks apart.

Explanation:

The nucleolus disappears as the nuclear membrane breaks down. The chromosomes become shorter and thicker and each become visible as a pair of strands called sister chromatids which are replicas of each other. These are joined at a specialized region called centromere.