What is the main difference between meiosis and mitosis? What is the reason for this?

With mitosis, cells are formed that are copies of the mother, and with meiosis – cells that are different from the mother. This is due to the features of the passage of meiosis.
In contrast to mitosis in meiosis, four haploid (1n) daughter cells are formed from one diploid (2n) mother cell, i.e., the number of chromosomes in the cell is halved. With meiosis, spores of plants and gametes of animals are formed. With the fusion of female and male gametes (fertilization), the diploid cell set is restored and, due to this, the karyotype characteristic of this type of organism is preserved in a number of generations.

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