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testcross

[ test-kraws, -kros ]
/ ˈtɛstˌkrɔs, -ˌkrɒs /

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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Question 1 of 9
You may have read the word "simmer" in a recipe or two, but what does it really mean?
To cook in water that begins cold and then reaches a boil.
To stew in a sauce for a long time.
To cook in water, just below boiling temperature.
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Origin of testcross

First recorded in 1930–35; test1 + cross

Words nearby testcross

test ban, test-bed, test blank, test card, test case, testcross, test-drive, testectomy, testee, tester, testes
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020