SINCE 1828
counterselection
noun
coun·ter·selection
| \ "+\
Definition of counterselection
: selection opposed in its effects to natural selection: such as
a
: preservation of less well-adapted individuals : dysgenic selection
b
: selection in plant or animal breeding against a quality undesirable from the point of view of the breeder though likely to be retained in a state of nature
counterselection against low milk production in cattle
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