AP BIOLOGY

Detailed explanation-1: -Telophase-During this phase, chromosomes disappear (become chromatin), nuclear membrane reforms, nucleoli reappears, spindle disappears and centrioles duplicate. Hence, the correct answer is option D.

Detailed explanation-2: -During the last phase of mitosis, telophase, the two sets of chromosomes reach the opposite poles of the cell. This is followed by the reformation of the nuclear envelope, uncoiling of the DNA, and disappearance of the spindle fibers.

Detailed explanation-3: -Telophase begins when the decondensing daughter chromatids arrive at the poles, the kinetochore microtubules disappear, and the nuclear envelope reforms around the decondensing chromosomes to form the two daughter nuclei (Benavente, 1991).

Detailed explanation-4: -During anaphase, the chromosomes separate and move along spindle fibers to opposite ends of the cell. During telophase, the chromosomes, which were distinct and condensed, begin to spread out into tangle of chromatin.

Detailed explanation-5: -During telophase, a new nuclear envelope starts to form around each set of the separated sister chromatids and they condense and unfold back into the chromatin. Cytokinesis heavily overlaps with late anaphase and early telophase and requires two events: membrane ingression and membrane abscission.