During mitosis, it is when the cell is in telophase.
In the telo phase
Telophase
During prometaphase, the nuclear envelope (membrane) breaks apart. However, some fragments of the nuclear envelope are still visible.
The phase where DNA is spread out as chromatin and the nuclear membrane is visible is the interphase. This is the period when the cell is not actively dividing, but preparing for division by duplicating its DNA and organelles.
The Nuclear membrane dissolves during prophase
The nuclear envelope reforms during telophase, which is the final stage of mitosis. In telophase, the nuclear membrane and nucleolus reappear, and the chromosomes begin to decondense back into chromatin.
prometaphase
In the telo phase
Prophase
Telophase
The phase of mitosis that begins when the nuclear membrane starts to fade is called prometaphase. During prometaphase, the nuclear membrane breaks down, allowing the spindle fibers to attach to the chromosomes.
During prometaphase, the nuclear envelope (membrane) breaks apart. However, some fragments of the nuclear envelope are still visible.
The phase where DNA is spread out as chromatin and the nuclear membrane is visible is the interphase. This is the period when the cell is not actively dividing, but preparing for division by duplicating its DNA and organelles.
"scientist have not discovered WHY it happens"It does not matter if scientists have discovered it or not, but the nuclear membrane disappears during PROPHASEHope this helped!!!
telophase
The nuclear membrane begins to fade from view during prophase, which is the first stage of mitosis. As the cell prepares for division, the nuclear membrane breaks down to allow the chromosomes to move freely within the cell.
The Nuclear membrane dissolves during prophase