Noun
(genetics) either of a pair (or series) of alternative forms of a gene that can occupy the same locus on a particular chromosome and that control the same character
Source: WordNetsome alleles are dominant over others Source: Internet
Among subjects homozygous for the CYP1A2 allele, ADRbeta1 Gly389 allele carriers are reported to have a higher percentage of depression level increase when compared to Arg389 homozygotes subjects. Source: Internet
A strong selective sweep results in a region of the genome where the positively selected haplotype (the allele and its neighbours) are in essence the only ones that exist in the population. Source: Internet
Autosomal recessive diseases, however, require two copies of the deleterious allele for the disease to manifest. Source: Internet
Because it is possible to possess one copy of a deleterious allele without presenting a disease phenotype, two phenotypically normal parents can have a child with the disease if both parents are carriers (also known as heterozygotes ) for the condition. Source: Internet
CF develops when neither allele can produce a functional CFTR protein. Source: Internet