counterselection
noun 2
Definitions
noun
1
Selection that removes unwanted characteristics.
In all recipients, distant drug resistance markers streptomycin (SmR; rpsL104), chloramphenicol (CmR; recA::cat(FRT)), and/or nalidixic acid (NlR; gyrA96) were used for counterselection.
2
Dysgenic selection (that has the opposite effects of natural selection).
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