obsolete mutant allele true Not required for any specific use case at this point so removed for simplicity. Formely asserted as allele and inferred as varaint allele. Eq class definition: allele and (mutation or ('has subsequence' some mutation)) 'Mutant' is typically contrasted with 'wild-type', where 'mutant' indicates a natural but very rare allele in a population (typically <1%), or an experimentally-induced variation that derives from a wild-type background locus for a given strain, which can be selected for in establishing a mutant line. Based on use of 'mutant' as described in PMID: 25741868 ACMG Guidelines An allele that is variant with respect to some wild-type allele, in virtue of its being very rare in a population (typically <1%), or being an experimentally-induced alteration that derives from a wild-type feature in a given strain. exploratory term