The name of the inheritance pattern in which both alleles are expressed equally is codominance/03%3A_Genetics/3.07%3A_Non-Mendelian_Inheritance). In codominance, two versions (alleles) of the same gene are expressed separately to yield different traits in an individual. Instead of one trait being dominant over the other, both traits appear, such as in a plant or animal that has more than one pigment color. Examples of codominance include a person with blood type AB, where both A allele and B allele are equally expressed, and flowers with petals having two different colors, where two color pigments are equally expressed.