In the initial stage of meiosis,a cell has 42 | vedclass

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Question

(D) Meiosis is a reductional division that occurs in two stages: meiosis-$I$ and meiosis-$II$.In meiosis-$I$,the chromosome number is reduced to half.

Vedclass · Accepted Answer

$21$

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(D) Meiosis is a reductional division that occurs in two stages: meiosis-$I$ and meiosis-$II$.In meiosis-$I$,the chromosome number is reduced to half. If a cell starts with $42$ chromosomes,after meiosis-$I$,each daughter cell will have $21$ chromosomes.Meiosis-$II$ is an equational division,similar to mitosis,where the chromosome number remains the same as the parent cell entering this phase.Therefore,since the cells entering meiosis-$II$ have $21$ chromosomes,the daughter cells produced at the end of meiosis-$II$ will also have $21$ chromosomes.

In the initial stage of meiosis,a cell has $42$ chromosomes. How many chromosomes are present at the end of meiosis-$II$?

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If $n=16$ in a plant cell,then how many chromosomes are present in each cell in metaphase-$I$ of meiosis?

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$A$ : Anaphase-$I$ is the actual phase of reduction in the number of chromosomes.
$R$ : Homologous chromosomes move to the opposite poles with both their chromatids.

The stage during which separation of the paired homologous chromosomes begins is

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