Synapsis occurs during:

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(A) Synapsis is the pairing of homologous chromosomes that occurs during the $Zygotene$ stage of $Prophase-I$ in meiosis.During this stage,chromosomes

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Zygotene

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(A) Synapsis is the pairing of homologous chromosomes that occurs during the $Zygotene$ stage of $Prophase-I$ in meiosis.During this stage,chromosomes start pairing together,and this process of association is called synapsis.Such paired chromosomes are called homologous chromosomes.$Leptotene$ is the stage where chromosomes become visible.$Diakinesis$ is the final stage of meiotic prophase $I$ where terminalization of chiasmata occurs.$Interphase$ is the phase between two successive cell divisions.

Column-$I$	Column-$II$
$A$. Pachytene	$i$. Pairing of homologous chromosomes
$B$. Metaphase-$I$	$ii$. Terminalization of chiasmata
$C$. Diakinesis	$iii$. Crossing over occurs
$D$. Zygotene	$iv$. Alignment at the equatorial plate

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