noun 下载 🔗分享 上位性, 基因上位作用. The modification of the expression of a gene by another unrelated one. Examples : "In Labrador Retrievers, coat color determination is an example of epistasis, where one gene (E/e) determines if pigment is deposited at all, overriding the effect of the gene (B/b) that determines the color of the pigment itself (black or brown). " 在拉布拉多寻回犬中,毛色是由上位性决定的一个例子,其中一个基因 (E/e) 决定了是否会沉积色素,从而覆盖了决定色素本身颜色(黑色或棕色)的基因 (B/b) 的作用,这种基因间的相互作用就是上位性,也称为基因上位作用。 biology biochemistry organism 与AI对话词汇游戏阅读练习