testcross


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Related to testcross: incomplete dominance

test·cross

 (tĕst′krôs′, -krŏs′)
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.

testcross

(ˈtɛstˌkrɒs) genetics
n
(Genetics) a genetic test for ascertaining whether an individual is homozygous or heterozygous
vb (tr)
(Genetics) to subject to a testcross

test•cross

(ˈtɛstˌkrɔs, -ˌkrɒs)

n.
a genetic test for heterozygosity in which an organism of dominant phenotype, but unknown genotype, is crossed with an organism recessive for all markers in question.
[1930–35]
test′-cross`, v.t.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.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
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 ?
Four possible exercises are presented: two versions of a dihybrid testcross and two versions of a three-point testcross.
Consequently, the mating of F1 females with F1 males effectively constitutes a testcross for genes on the X-chromosome and provides F2 data that can be fairly easily analyzed by beginning students.
Calculating map units between linked genes is most straightforward when testcross data is used (Brooker, 2005; Russell, 2006).