sexual union

mating of individuals having more traits in common than likely in random mating

mating of individuals having traits more dissimilar than likely in random mating

(genetics) the act of mixing different species or varieties of animals or plants and thus to produce hybrids

the act of mating closely related individuals

the act of mating by male animals

hybridization using two traits with two alleles each

hybridization using a single trait with two alleles (as in Mendel's experiments with garden peas)

hybridization involving a pair of crosses that reverse the sexes associated with each genotype

a cross between an organism whose genotype for a certain trait is unknown and an organism that is homozygous recessive for that trait so the unknown genotype can be determined from that of the offspring