bn:00076650n
Noun Concept
Categories: Classical genetics, All articles needing additional references
EN
testcross  test-cross  test cross
EN
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 WordNet 3.0
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EN
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 WordNet 3.0 & Open English WordNet
Under the law of dominance in genetics, an individual expressing a dominant phenotype could contain either two copies of the dominant allele or one copy of each dominant and recessive allele. Wikipedia
The breeding of an individual with a phenotypically recessive individual, in order to determine the zygosity of the former by analysing proportions of offspring phenotypes. Wiktionary
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