specific locus test

specific locus test

[spə′sif·ik ′lō·kəs ‚test]
(genetics)
A technique used to detect recessive induced mutations in diploid organisms; a strain which carries several known recessive mutants in a homozygous condition is crossed with a nonmutant strain treated to induce mutations in its germ cells; induced recessive mutations allelic with those of the test strain will be expressed in the progeny.
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