| 单词 | testcross |
| 释义 | testcross in British English (ˈtɛstˌkrɒs) genetics noun 1. a genetic test for ascertaining whether an individual is homozygous or heterozygous verb (transitive) 2. to subject to a testcross testcross in American English (ˈtestˌkrɔs, -ˌkrɑs) 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 Word origin [1930–35; test1 + cross]This word is first recorded in the period 1930–35. Other words that entered Englishat around the same time include: DNA, boondoggle, old school tie, saddle stitch, videoExamples of 'testcross' in a sentence |
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