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Question

In meiosis I, the centromere undergoes

A
Division between anaphase a interphase
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B
Division between prophase and metap
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C
Division but the daughter chromosomes do not separate
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D
No division
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Solution

The correct option is A Division between anaphase a interphase
Meiosis occurs in two stages - meiosis I and meiosis II. The meiosis I is characterised by pairing of homologous chromosomes, crossing over and separation of homologous chromosomes. The centromere remains intact during meiosis I and homologous chromosomes separate. Thus, the number of chromosomes in progeny nuclei is reduced to one half. In meiosis II, just as mitosis, centromere separate and, hence, the number of chromosomes in the progeny remains same.

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