In genetics, what inheritance pattern involves two different traits?

The inheritance pattern that involves two different traits is characterized by the simultaneous examination of two genes, each potentially contributing to the phenotype of an organism. This is known as a dihybrid inheritance pattern. In a dihybrid cross, one can study the inheritance of two traits that are encoded by two different pairs of alleles. For example, if you consider the traits of seed shape (round or wrinkled) and seed color (yellow or green) in pea plants, a dihybrid cross would involve analyzing how these traits segregate independently and combine in the offspring, based on Mendel's laws of inheritance.

In contrast, a monohybrid cross focuses on one trait only, examining how a single pair of alleles behaves. Autosomal refers to the chromosomes that are not sex chromosomes and does not specify whether one or two traits are involved. Co-dominant inheritance involves cases where both alleles in a heterozygote are fully expressed, leading to a phenotype that displays both traits distinctly, but it still typically focuses on a single trait at a time in genetic examination. Therefore, the key feature of dihybrid inheritance is its focus on two different traits, making it the correct choice.