Negative selection (natural selection)
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Negative selection, in natural selection, is the selective removal of alleles that are deleterious. This can result in stabilizing selection through the purging of deleterious variations that arise. The ongoing process of purging of deleterious alleles, due to the constant occurrence of new deleterious mutants, is referred to as background selection.[citation needed]it:Selezione negativa (naturale)
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