Whereas the number of chromosomes is reduced to half in the first meiotic division,what is the need for the second meiotic division?

The significance of meiosis is that it-

During reproduction,the chromosome number $(2n)$ reduces to half $(n)$ in the gametes,and the original number $(2n)$ is restored in the offspring. What are the processes through which these events take place?

How many meiotic divisions are required to produce $32$ spermatozoa?

Which of the following statements are correct regarding the importance of meiosis?
$(i)$ It increases the genetic variability in the population of organisms from one generation to the next.
$(ii)$ It decreases genetic variability.
$(iii)$ It occurs in all cells of our body.
$(iv)$ It is an important process for evolution.

Which process is significant for evolution?