AP BIOLOGY

Detailed explanation-1: -In telophase when the two nuclei start forming, the spindle fibres disappear and also the nuclear membrane and the nucleolus reappear. So, the correct option is “Telophase".

Detailed explanation-2: -Telophase. The final stage of mitosis, and a reversal of many of the processes observed during prophase. The nuclear membrane reforms around the chromosomes grouped at either pole of the cell, the chromosomes uncoil and become diffuse, and the spindle fibres disappear.

Detailed explanation-3: -Telophase –I is the stage of meiosis in which the spindle fibres disappear.

Detailed explanation-4: -Telophase: spindle fibers break down, nuclear membrane forms, and chromosomes begin to uncoil and form chromatin.

Detailed explanation-5: -The spindle continues to elongate during telophase, as the chromosomes arriving at the poles are released from the spindle microtubules and the nuclear envelope re-forms around them. Both the assembly and the function of the mitotic spindle depend on microtubule-dependent motor proteins.