mating, pairing, sexual union, union, coupling, conjugation - the act of pairing a male and female for reproductive purposes; "the casual couplings of adolescents"; "the mating of some species occurs only in the spring"

dihybrid cross - hybridization using two traits with two alleles each

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

reciprocal cross, reciprocal - hybridization involving a pair of crosses that reverse the sexes associated with each genotype

test-cross, testcross - 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

genetic science, genetics - the branch of biology that studies heredity and variation in organisms

facts of life, procreation, reproduction, breeding - the sexual activity of conceiving and bearing offspring