testcross (redirected from testcrosses)

test·cross  (tstkrôs, -krs)

n.

A cross between an individual exhibiting the dominant phenotype of a trait and an individual that is homozygous recessive for that trait in order to determine the genotype of the dominant individual.

tr.v. test·crossed, test·cross·ing, test·cross·es

To subject to a testcross.

Thesaurus

Noun

1.

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 test-cross hybridisation, hybridization, hybridizing, interbreeding, crossbreeding, crossing, cross - (genetics) the act of mixing different species or varieties of animals or plants and thus to produce hybrids