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.

QUIZ

ARE YOU A TRUE BLUE CHAMPION OF THESE "BLUE" SYNONYMS?

We could talk until we're blue in the face about this quiz on words for the color "blue," but we think you should take the quiz and find out if you're a whiz at these colorful terms.

Question 1 of 8

Which of the following words describes “sky blue”?

navy

beryl

azure

TAKE THE QUIZ TO FIND OUT

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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