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Question

(A) The correct matching is as follows:$(a)$ Synapsis (pairing of homologous chromosomes) occurs during the Zygotene stage of Prophase$-I$ of meiosis.

Vedclass · Accepted Answer

$(a) \rightarrow (ii), (b) \rightarrow (iii), (c) \rightarrow (v), (d) \rightarrow (iv)$

Vedclass · Answer

(A) The correct matching is as follows:$(a)$ Synapsis (pairing of homologous chromosomes) occurs during the Zygotene stage of Prophase$-I$ of meiosis. Thus,$(a) \rightarrow (ii)$.$(b)$ Synthesis of tubulin protein required for spindle fiber formation occurs during the $G_2$-phase of the cell cycle. Thus,$(b) \rightarrow (iii)$.$(c)$ The enzyme recombinase mediates crossing over between non-sister chromatids,which occurs during the Pachytene stage of Prophase$-I$. Thus,$(c) \rightarrow (v)$.$(d)$ During Anaphase$-II$,centromeres split and sister chromatids move towards opposite poles. Thus,$(d) \rightarrow (iv)$.Therefore,the correct sequence is $(a) \rightarrow (ii), (b) \rightarrow (iii), (c) \rightarrow (v), (d) \rightarrow (iv)$.

Column $-I$	Column $-II$
$(a)$ Synapsis aligns homologous chromosomes	$(i)$ Anaphase$-I$
$(b)$ Synthesis of tubulin protein	$(ii)$ Zygotene
$(c)$ Action of enzyme recombinase	$(iii)$ $G_2$-phase
$(d)$ Centromeres split and chromatids move towards opposite poles	$(iv)$ Anaphase$-II$
	$(v)$ Pachytene

Similar Questions

Choose the incorrect statement.

The two figures $A$ and $B$ given below represent which stages of cell division respectively?

$A$: $DNA$ replication occurs only once in meiosis.
$R$: Exchange of $DNA$ in chromosomes is seen in mitosis.

$X$-bodies were discovered by:

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