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testcross: Meaning and Definition of

test•cross

Pronunciation: (test'krôs", -kros"), [key]
— n.
  1. 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.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
See also:
test case test-drive
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