Synaptonemal complex is formed during

Diplotene

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Diakinesis

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zygotene

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Leptotene

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Solution

The correct option is C
zygotene

The synaptonemal complex is a protein structure that forms between homologous chromosomes (two pairs of sister chromatids) during zygotene .The complex formed by a pair of synapsed homologous chromosomes is called a bivalent or a tetrad. However, these are more clearly visible at the next stage pachytene.

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	Column I		Column II
A	Leptotene	1	Terminalisation of chiasmata
B	Zygotene	2	Dissolution of the synaptonemal complex
C	Pachytene	3	Crossing over takes place
D	Diplotene	4	Formation of synaptonemal complex
E	Diakinesis	5	Condensation of chromosome

(a)	Zygotene	(i)	Condensation of chromatin begins
(b)	Leptotene	(ii)	Dissolution of synaptonemal complex
(c)	Diplotene	(iii)	Synapsis
(d)	Diakinesis	(iv)	Terminalisation of chiasmata