Assertion: gene's allele | /r/CapableOf | persist in population
Facets:
value: at no cost to those individuals
type: MANNER
value: with most copies
type: OTHER
value: at low frequencies
type: MANNER
Source sentences:
text: Deleterious recessive alleles may persist in a population at low frequencies, with most copies carried in heterozygotes, at no cost to those individuals.