Question

what happens during prophase? the first and longest stage of mitosis is called prophase. before prophase, dna is in a relaxed, or unwound, form known as chromatin. during prophase, chromatin becomes tightly wound, or condenses, into chromosomes. during prophase, each chromosome is x - shaped. the left half of the x is one chromosome copy. the right half is an identical copy. each half of the x is a sister chromatid containing identical copies of dna. the sister chromatids are attached near the center of the chromosome by a structure called the centromere. the centromere ensures that a complete copy of the dna becomes part of each daughter cell at the end of the cell cycle. take a look 6. highlight the steps that occur in prophase. think it over 7. identify how are the sister chromatids attached?

Explanation:

The image shows the cell - cycle with a focus on mitosis, specifically asking about prophase. During prophase of mitosis, the nuclear membrane disintegrates, the nucleolus disappears, chromosomes condense from chromatin, and the spindle apparatus begins to form between the poles.

Answer:

During prophase, the nuclear membrane disintegrates, the nucleolus disappears, chromatin condenses into chromosomes, and the spindle apparatus begins to form between the poles.