What is the significance of meiosis?

(N/A) Meiosis is the process involving the reduction in the amount of genetic material. It comprises two successive nuclear and cell divisions,with a single cycle of $DNA$ replication. As a result,at the end of meiosis $II$,four haploid cells are formed.
Significance of meiosis:
$1$. Meiosis maintains the chromosome number from generation to generation. It reduces the chromosome number to half so that the process of fertilisation restores the original number in the zygote.
$2$. Variations are caused by the cross-over and the random distribution of homologous chromosomes between daughter cells. Variations play an important role in evolution.
$3$. It introduces genetic diversity,which is essential for the survival of species in changing environments.