alleles

n.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

"some alleles are dominant over others"

同义词：allelomorph

1. Different alleles can result in variations of a specific trait in an organism.
   不同的等位基因可以导致生物体特定性状的变异。
2. In a population, the frequency of alleles can change over time due to natural selection.
   在一个种群中，由于自然选择，等位基因的频率可能会随着时间的推移而变化。