testcross

American  

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

noun

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.

---

Etymology

Origin of testcross

First recorded in 1930–35; test ¹ + cross