Assertion: mutation's gene | /r/HasProperty | cloned
Facets:
Source sentences:
text: When a spontaneous or induced mutant phenotype is subsequently found to be a mutation in a structural gene, or the gene in which the mutation has occurred is cloned, the mutation becomes an allele of that gene and the symbol for the mutant allele is formed by adding the original mutant symbol as a superscript to the new gene symbol.