What are the main selection methods you know?

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

Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.