Assertion: gene's allele | /r/AtLocation | one single individual
Facets:
value: rarely all
type: DEGREE
Source sentences:
text: The advantage of gene editing over conventional selection to move these naturally-occurring alleles from one animal to another is that favorable alleles rarely all occur in one single individual and editing offers the opportunity to increase the frequency of desirable alleles in an individual or a breed more rapidly than could occur through conventional breeding.