AP BIOLOGY

Detailed explanation-1: -During prophase, the chromosomes condense, the nucleolus disappears, and the nuclear envelope breaks down.

Detailed explanation-2: -Telophase: During telophase, many of the processes seen during the prophase are reversed. The nuclear membrane disappears. The chromosomes uncoil and become diffused, and the spindle fibers disappear.

Detailed explanation-3: -Prometaphase is the second phase of mitosis, the process that separates the duplicated genetic material carried in the nucleus of a parent cell into two identical daughter cells. During prometaphase, the physical barrier that encloses the nucleus, called the nuclear envelope, breaks down.

Detailed explanation-4: -The nuclear membrane fragments during prometaphase and the mitotic spindle, consisting of microtubules and associated proteins, forms between the two centrioles.