Final answer:
In genetics, when yellow and blue make green, the dominant allele determines the visible trait, resulting in a yellow phenotype. However, when both recessive alleles are inherited, the recessive allele determines the visible trait, resulting in a green phenotype.
Step-by-step explanation:
In genetics, when yellow and blue make green, we are referring to the inheritance of color traits in plants or animals. This can be explained through the principles of Mendelian genetics, specifically through the concept of dominant and recessive alleles. In this case, yellow represents a dominant allele, while blue represents a recessive allele. When a plant or animal inherits one yellow allele and one blue allele, the dominant yellow allele will determine the visible trait, resulting in a yellow phenotype. However, when two blue alleles are inherited, the recessive blue allele will determine the visible trait, resulting in a green phenotype.