What is the biological significance of meiosis as a special form of cell division, its difference from frost?

The main difference between meiosis and mitosis (or another formulation is the difference between meiotic and mitotic divisions) is that in the first case, the number of chromosomes is reduced by half, and in the second, not). The difference in the mechanism is reduced to the fact that in the anaphase of meiosis 1 they diverge to different poles of the chromosome, and during mitosis – chromatids, on which the second DNA strands are then completed according to the principle of complementarity, thus preserving the diploid set of chromosomes. In case of meiosis, it shrinks exactly in half, becoming haploid.