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testcross

[ test-kraws, -kros ]
/ ˈtɛstˌkrɔs, -ˌkrɒs /
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noun
a genetic test for heterozygosity in which an organism of dominant phenotype, but unknown genotype, is crossed to an organism recessive for all markers in question.
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Origin of testcross

First recorded in 1930–35; test1 + cross
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021
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