The emergence of a diploid set of chromosomes in organisms has played a very important role in the evolution of the organic world. Give at least three consequences of this global aromorphosis.
1) doubled hereditary information made organisms more viable, since accidental harmful recessive ones do not lead to the death of cells and organisms;
2) recessive mutations persisted in diploid cells as a reserve of hereditary variability and natural selection;
3) diploidy led to a new type of cell division – meiosis;
4) diploidy contributed to an increase in the number of combinations of genes in meiosis and during sexual reproduction, which led to the genetic diversity of organisms.
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