Cell Cycle and Cell DivisionHard

Question

Segregation of Mendelian factro (Aa) occurs during

Options

A.diplotene
B.anaphase -I
C.zygotene / pachytene
D.anaphase -II

Solution

It is anaphase-I of meiosis, under which the maternal and paternal chromosomes of each homologous pair (bivalent) separate out from each other independently of other chromosomes . Centromere does not divide so that poleward movement of both chromatids of a chromosome occur. It results in reduction of chromosome number to half and segregation of Mendelian factors (genes), essential for sexual reproduction. It also brings genetic variation due to inde pendent of homologous chromosomes.

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