1、In genetics, codominant refers to a situation where both alleles of a gene are expressed equally in a heterozygous individual.
在遗传学中，共显性指的是在杂合个体中，一个基因的两个等位基因同时表达且表达程度相等。

2、The ABO blood type system is an example of codominance, where both the A and B alleles are expressed in individuals with AB blood type.
ABO血型系统是共显性的一个例子，AB型血型个体中同时表达A和B等位基因。