In the Prophase. Nuclear envelope and nucleolus disappears.
The phase of mitosis where the nuclear envelope and nucleus disappear is called prophase. During prophase, the chromatin condenses into discrete chromosomes, and the spindle apparatus begins to form, facilitating the movement of chromosomes during cell division.
"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!!!
The phase of mitosis that is essentially the opposite of prophase in terms of nuclear changes is telophase. During telophase, the nuclear envelope reforms around the separated daughter chromosomes, leading to the formation of two distinct nuclei. In contrast, during prophase, the nuclear envelope breaks down to allow for chromosome condensation and rearrangement.
The following process happens in the prophase of mitosis, during which the nuclear envelope will disappear along with the nucleolus. The chromosomes are then ready to be moved to the center to be split.
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.
Prophase.
The phase where the nucleus and the nuclear membrane disappear is called prometaphase. This is the phase following prophase in mitosis or meiosis when the nuclear envelope breaks down and the chromosomes become more condensed and visible.
The phase of mitosis where the nuclear envelope and nucleus disappear is called prophase. During prophase, the chromatin condenses into discrete chromosomes, and the spindle apparatus begins to form, facilitating the movement of chromosomes during cell division.
in what phase nuclear envelopes are absent?
Interphase
Prophase
During prometaphase, the nuclear envelope (membrane) breaks apart. However, some fragments of the nuclear envelope are still visible.
prophase
"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!!!
The phase of mitosis that is essentially the opposite of prophase in terms of nuclear changes is telophase. During telophase, the nuclear envelope reforms around the separated daughter chromosomes, leading to the formation of two distinct nuclei. In contrast, during prophase, the nuclear envelope breaks down to allow for chromosome condensation and rearrangement.
The phase of mitosis that has no clear nucleus is called prometaphase. In this phase, the nuclear envelope breaks down, allowing the chromosomes to become more condensed and visible, but the formation of the new nuclear envelope has not yet occurred.
The nuclear envelope reforms and the nucleoli reappear during telophase of mitosis. This phase marks the end of nuclear division as the newly formed daughter nuclei begin to re-establish their nuclear envelopes.