counterselection

English

Etymology

counter- +‎ selection

Noun

counterselection (countable and uncountable, plural counterselections)

  1. selection that removes unwanted characteristics
    • 2015 July 11, “Novel recA -Independent Horizontal Gene Transfer in Escherichia coli K-12”, in PLOS ONE‎, DOI:10.1371/journal.pone.0130813:
      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. (evolutionary theory) dysgenic selection (that has the opposite effects of natural selection)
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