Question

Which one of the following precedes reformation of nuclear envelope during M-phase of cell cycle ?

• A. Decondensation of chromosomes and reassembly of nuclear lamina
• B. Transcription from chromosomes and reassembly of nuclear lamina
• C. Formation of the contractile ring and formation of phragmoplast
• D. Formation of the contractile ring and transcription from chromosomes

Answer 1

Answer: (A)

Decondensation of chromosomes and reassembly of nuclear lamina

Answer 2

M phase is known as mitotic phase and cell division occurs in this phase. The re-formation of the nuclear envelope during M-phase of the cell cycle takes place during telophase. The nuclear membrane which disappears during propahse reappears in the telophase. But before it is reformed the nucleus gets reorganised by decondensation from chromosome and reassembly of the nuclear lamina.