A good example of incompletely dominant traits has shown up in corn snakes. 一个很好的例子已经表明不完全显性性状在玉米蛇。
If homozygotes have a more severe phenotype than do heterozygotes, the disorder is termed semidominant or incompletely dominant. 若纯合子的表型较杂合子严重, 则为半显性或不完全显性。