In this family tree, the father in the first generation shows a particular trait (as indicated ... brown body color is the dominant phenotype, and black body color is the recessive phenotype.

Bad memory? Poor sleep habits? These inherited traits may come from your parents. But who's to blame? Here's what the science ...

Characteristics are passed from parents ... the same position on both chromosomes in the pair. Alleles can be dominant or recessive. Dominant alleles will be expressed even if a recessive allele ...