During cell division,sometimes there will be failure of separation of sister chromatids. This event is called

Select the correct option by matching Column $I$ with Column $II$.

Column $I$	Column $II$
$A$. Synapsis aligns homologous chromosomes	$(i)$ Anaphase $II$
$B$. Synthesis of $RNA$ and protein	$(ii)$ Zygotene
$C$. Action of enzyme recombinase	$(iii)$ $G_2$ phase
$D$. Centromeres do not separate but chromatids move towards opposite poles	$(iv)$ Anaphase $I$
	$(v)$ Pachytene

Statement $X$: During the process of meiosis,the genetic material replicates only once.
Statement $Y$: During interkinesis,there is no replication of genetic material.

During which phase do the centromeres lie on the equatorial plate and the arms point towards the poles?

Analyse the events during every stage of the cell cycle and notice how the following two parameters change:
$(i)$ Number of chromosomes $(N)$ per cell
$(ii)$ Amount of $DNA$ content $(C)$ per cell

Mitosis and meiosis take place respectively in