Red is the rarest hair color, but to understand why that’s the case, you need a basic grasp of the science. There’s a lot ...

The dominant and recessive traits of the genes, which are inherited from the parents, determine the eye color of their ...

Because the male exhibits the dominant body color phenotype ... to the normal yellow-body allele (E), while the brown-eye allele (b) is recessive to the normal red-eye allele (B).