AP BIOLOGY

Detailed explanation-1: -Traits controlled by a single gene with more than two alleles are called multiple allele traits. An example is ABO blood type. Your blood type refers to which of certain proteins called antigens are found on your red blood cells.

Detailed explanation-2: -Most traits are determined by more than one gene. For example, skin color and height are determined by many genes. Some phenotypes however, are determined by a single gene.

Detailed explanation-3: -Polygenic Trait A polygenic trait is a characteristic, such as height or skin color, that is influenced by two or more genes. Because multiple genes are involved, polygenic traits do not follow the patterns of Mendelian inheritance.

Detailed explanation-4: -Some traits, like hair color, come from many different genes, but other traits are controlled by a single gene. Those simple traits include Huntington’s disease, galactosemia and phenylketonuria.