testcross

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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.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

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.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
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
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
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
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Testcrossing is the most common way to identify superior hybrids in plant breeding.
Detection of QTLs for Yield Heterosis in Rice Using a RIL Population and Its Testcross Population
While the core crosses of the dihybrid exercises are the two testcrosses (Figure 2A,B), several crosses are required to produce the dihybrid virgins for testcrossing. A mating scheme for the in cis dihybrid testcross is shown in Figure 3; the equivalent scheme for the in trans dihybrid testcross is shown in Figure 4.
Laboratory exercises to examine recombination & aneuploidy in Drosophila
Each [F.sub.2] plant had at least two spikes used for testcrossing to determine genotype, as well as one spike bagged to produce self-pollinated seed.
A species cytoplasm specific gene in euplasmic durum wheat does not alter field performance
However, the three [F.sub.2] genotypes could not be differentiated directly but required that individual F2 plants be progeny tested by selfing or by testcrossing as female to another semigamy line with the virescent (rT) phenotype, since semigametic lines do not produce haploids when used as male in crosses with normal lines.
Semigamy gene is associated with chlorophyll reduction in cotton
As expected, testcrossing cycles of WQS tended to reduce nutritional quality below that of respective cycles per se because the tester inbreds were not selected on the basis of quality, but rather for hybrid yield potential (Table 2).
Selection for silage quality in the Wisconsin Quality Synthetic and related maize populations

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