第三节非孟德尔遗传现象 等位基因之间的互作 R-R- red white 不完全显性 F R'RXRR F1XF Figure 10.4 A Case of Codominance The of these snapdragons are determined by two alleles for 1/4 R'R'red petal color,F and p.There are three different phenotypes because of the way in which the alleles interact with one another.In the 1/2 R'R pink F2 heterozygous condition,neither of the alleles dominates the other. 1/4 RRwhite 复等位基因 共显性第三节 非孟德尔遗传现象 一、等位基因之间的互作 不 完 全 显 性 复等位基因 共显性