Q.

Arrange the following events of meiosis in correct sequence.I. Exchange of genetic material between homologous chromosomes.II. Separation of sister chromatids.III. Formation of synaptonemal complex.IV. Total disappearance of chiasmata.

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a

III, I, IV, II

b

I, III, IV, II

c

III, I, II, IV

d

III, IV, I, II

answer is A.

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Detailed Solution

Synaptonemal complex is formed in zygotene, exchange of genetic material between homologous chromosomes takes place during pachytene, Chiasmata are completely lost in Anaphase I and sister chromatids are separated during Anaphase II.
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