Meiosis becomes significant for the following reasons.
Constant Number of Chromosomes:
It brings about a reduction in the chromosome number from a diploid (2n) condition to a haploid (n) condition. Such a reduction becomes necessary for maintaining the chromosome number.
Genetic combination:
It provides chance for the appearance of new gene combinations as a result of crossing over. This situation brings about variations.
It is a division necessary for the formation of gametes in animals and spores in plants. Both mitosis and meiosis essentially follow the same sequence in all living organisms, which is an evidence of the basic relationship between diverse groups of living organisms.