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Why is it important the nuclear membrane disappears during mitosis?
Wiki User
∙ 13y ago
A lot of things happen during mitosis. When the cell is OUT of mitosis, chromosomes are not discernible from each other ; the shapeless substance they form is called 'chromatin', and genes can be (and are) expressed at that stage. Then prior to mitosis, chromosomes duplicate (this is called the 'Replication').
During mitosis now :
* Prophase: Chromosomes condense into the fully discernible "X-shaped" pairs that can be ordered by size. Each "X" is actually two identical chromosome molecules bound together ; genes are not expressed in this compact form.
* Prometaphase: At that stage, the nuclear membrane disappears.
// It is important because chromosomes are then accessible to the microtubules network. Actually two networks form, each from a center called centriole (one for each daughter cell, diametrically opposed on each side of the mother cell). //
* Metaphase: The microtubule networks expand and bind to one of the molecules of each chromosome (each branch of the "X").
* Anaphase: When citokinesis occurs they contract, thus separating each chromosome molecule from its duplicate (hopefully one chromosome molecule of each pair going in each daughter cell).
* Telophase: The nucleus membrane is then reformed in the daughter cells and chromosomes go back in chromatin form.
Disclaimer : the disappearance of nucleic membrane is NOT common to all eukaryota (although it is for all animals). Some species perform the whole process with an intact nuclear membrane.
Wiki User
∙ 13y ago
Wiki User
∙ 14y agoSpindle fibers wouldn't be able to attach to the chromosomes, halting the mitotic process.
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When does the nuclear membrane and nucleolus reappear?
The nuclear membrane disappears during prophase of mitosis and reappears during telephase
What is the phase in mitosis where the nuclear membrane disappears?
"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!!!
What stage of mitosis where nuclear envelop disappears and the chromosomes form?
stage of mitosis when nuclear envelop disappears and the chromosomes form is the "PROPHASE"
What stage is the nuclear membrane formed again?
Two nuclear membranes are formed in the telophase of mitosis.
Why it is important for the nuclear membrane to disintegrate during mitosis?
The nuclear membrane degrades in the part of mitosis called the "prometaphase". It is important because in the process of cytokinesis (nucleus division) the new nucleus has to burst out of the parent nucleus. The disintegration of the nuclear membrane makes sure that the new nucleus will come out smoothly and easily. If the nuclear membrane didn't disintegrate, the new nucleus would burst from the parent nucleus and therefore will damage the cell.
When does the nuclear membrane and nucleolus reappear?
The nuclear membrane disappears during prophase of mitosis and reappears during telephase
What is the phase in mitosis where the nuclear membrane disappears?
"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!!!
What stage of mitosis where nuclear envelop disappears and the chromosomes form?
stage of mitosis when nuclear envelop disappears and the chromosomes form is the "PROPHASE"
Nuclear membrane disappears.?
Prophase
Which phase does the nuclear membrane disappears?
prometaphase
How is prophase different from telophase?
In Prophase, the nuclear membrane disappears. In telophase, the nuclear membrane re-forms.
What phase of mitosis does nuclear membrane disappear?
Prophase
What stage is the nuclear membrane formed again?
Two nuclear membranes are formed in the telophase of mitosis.
Why it is important for the nuclear membrane to disintegrate during mitosis?
The nuclear membrane degrades in the part of mitosis called the "prometaphase". It is important because in the process of cytokinesis (nucleus division) the new nucleus has to burst out of the parent nucleus. The disintegration of the nuclear membrane makes sure that the new nucleus will come out smoothly and easily. If the nuclear membrane didn't disintegrate, the new nucleus would burst from the parent nucleus and therefore will damage the cell.
What is the stage of mitosis where the nuclear membrane has completely disappeared?
in early stage of mitosis
What phase of mitosis begins when the nuclear membrane begins to fade?
metaphase
What stage mitosis is it when chromosomes shorten and thicken and the nuclear membrane begins to disappear?
In prophase stage, the replicated chromosomes condense and the nuclear envelope disappears. Earlier in prophase, chromatin visible condenses into the chromosomes.
