What is the biological meaning of meiosis?

The biological meaning of meiosis is that four haploid cells are formed from the same mother cell with a diploid set of chromosomes, thus the number of chromosomes is reduced by half, and the amount of DNA by four. As a result of this division, sex cells (gametes) are formed in animals and spores in plants.
1) is the main stage of gametogenesis;
2) provides the transfer of genetic information from the body to the body during sexual reproduction;
3) daughter cells are not genetically identical to the mother and to each other.
And also, the biological significance of meiosis lies in the fact that a decrease in the number of chromosomes is necessary during the formation of germ cells, since when fertilized, the gamete nuclei fuse. If this reduction did not occur, then in the zygote (therefore, in all cells of the daughter organism), the chromosomes would become twice as large. However, this contradicts the rule of constancy of the number of chromosomes. Thanks to meiosis, germ cells are haploid, and during fertilization in the zygote, the diploid set of chromosomes is restored

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