In which type of cell division does spindle formation not occur?

Chromosomes become short,dense,and distinct,each chromosome consists of a centromere and two chromatids,and the nucleolus and nuclear envelope disappear. During which phase are these changes observed?

Match List-$I$ with List-$II$.

List-$I$	List-$II$
$(a)$ $S$ phase	$(i)$ Proteins are synthesized
$(b)$ $G_2$ phase	$(ii)$ Inactive phase
$(c)$ Quiescent stage	$(iii)$ Interval between mitosis and initiation of $DNA$ replication
$(d)$ $G_1$ phase	$(iv)$ $DNA$ replication

Choose the correct answer from the options given below.

Statement $P$: The $G_1$ phase is the final phase of interphase.
Statement $Q$: $DNA$ synthesis occurs in the $G_2$ phase.

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

What is the multinucleate condition of a cell called?