Hybridization (crossbreeding) and artificial selection are the main methods of plant and animal breeding.
Crossbreeding as a way to increase the hereditary heterogeneity of individuals of a variety or breed, to obtain source material for artificial selection. Types of crossbreeding: closely related (crossbreeding of individuals of one variety or breed), unrelated (crossbreeding of individuals of different varieties, breeds, different species).
Artificial selection – preservation by a breeder for breeding individuals with traits that are necessary for a person that is not always useful for the organism itself, in contrast to natural selection, which preserves individuals with traits that are useful to them
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