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: -Telophase. The spindle disappears, a nuclear membrane re-forms around each set of chromosomes, and a nucleolus reappears in each new nucleus.

Detailed explanation-3: -Final answer: The nuclear membrane and nucleolus reappear during telophase.

Detailed explanation-4: -The nucleolus separated into two discreet masses connected by a dense band of microtubules as the spindle elongated. At telophase, the distal ends of the mitotic spindle were still completely embedded within the daughter nucleoli.

Detailed explanation-5: -Telophase. The spindle fibers disappear; the chromosomes uncoil and become spaghetti-like chromatin again, and the nuclear membrane reappears.