The number of chromosomes after phase I of meiotic division in reduction division..

Remain unchanged

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Become doubled

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Become halved

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Exhibit polyploidy

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Solution

The correct option is D Become halved
In meiosis I homologous chromosomes pair, exchange segments and then separate, i.e., each chromosome of a homologous pair goes to opposite pole. Thus reducing the number of chromosomes to half. Second division or meiosis II is normal equational division like mitosis.
So, the correct answer is 'Become halved'

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Reduction of number of chromosomes during sexual reproduction is controlled by meiotic cell division.

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