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Question

Assertion :The first meiosis division are known as heterotypic division. Reason: The first division of meiosis result in reduced number of chromosomes.

A
Both Assertion and Reason are correct and Reason is the correct explanation for Assertion.
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B
Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion.
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C
Assertion is correct but Reason is incorrect.
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D
Both Assertion and Reason are incorrect.
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Solution

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion.
The meiosis I is the reduction division in which the chromosome number is reduced to half. Thus, two haploid cells are produced after meiosis I. The meiosis II is the equational division in which the chromosome number remains the same as in the daughter cells produced after meiosis I. Thus a total of four haploid cells are produced after meiosis II. In such division, the first division is known as heterotypic division. The number of chromosomes is reduced by half during this division.
So, the correct answer is option A.

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