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Noun1.test-cross - 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
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
References in periodicals archive ?
Parent lines were chosen from among a cross-section of 1045 white-grained southern African maize inbreds screened for grain iron and zinc concentration in single-location test-cross trials in Zimbabwe in 1995-1996.
In spite of selecting inbred lines with similar test-cross performance for grain yield, GCA for grain yield of high lines averaged slightly less (-0.
Test-cross hybrids between KS 98 and AWheatland, ATx623, AOK11, and ASA3042 were evaluated in Kansas in 1998 (Table 1).
Opsahl (1956) proposed a triple test-cross design for unambiguous detection of epistasis in an [F.