Question

In which stage the nuclear membrane completely disappears during nuclear division
(a) Metaphase
(b) Anaphase
(c) Telephane
(d) Hephase​

Answer 1

Answer:

Prophase stage is the longest stage in cell cycle. In early prophase stage, the chromatin fibres condenses. In mid-prophase, chromosomes show distinct chromatids joined together at centromere. In late prophase, the nucleolus degenerates and nuclear envelop disappears.

Answer 2

Answer:

Nuclear membrane disappears in late prophase. Longest phase of mitosis is prophase. During prophase, which occurs after G2 interphase, the cell prepares to divide by tightly condensing its chromosomes and initiating mitotic spindle formation.