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.
Spindles disappear during telophase, which is the final phase of mitosis. In this phase, the chromosomes reach the opposite poles of the cell, and the spindle fibers break down and disappear. This is followed by the reformation of the nuclear envelope around the separated sets of chromosomes, leading to the completion of cell division.
The nuclear membrane reforms and chromosomes disappear during the telophase phase of mitosis. In this phase, the separated sister chromatids reach the opposite poles of the cell, and the nuclear envelope begins to reassemble around each set of chromosomes. Subsequently, the chromosomes decondense back into chromatin, preparing for the next cell cycle.
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.
"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!!!
prophase
The nucleus disappears during prophase of mitosis. In this phase, the chromatin condenses into visible chromosomes, and the nuclear envelope breaks down, allowing the microtubules to access the chromosomes. This dissolution of the nucleus is crucial for the subsequent steps of cell division.