[医] 等位基因, 对偶基因

[ 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
<noun.body>
some alleles are dominant over others

allele \al*lele"\ n.
1. 1

1. one of two or more alternative forms of a gene that can
have the same place on homologous chromosomes and are
responsible for alternative traits.

Syn: allelomorph
[WordNet 1.5]

2. either of a pair of Mendelian characters that may occur in
an organism as a consequence of variation at one gene
locus.
[PJC]