@Nullo – The phenotype relies on the genotype which are the inherited instructions in our genetic code. So phenotypes are about genetics. And the rules behind all this were already discovered by Mendel in the 19th century.
“Dominance in genetics is a relationship between two variant forms (alleles) of a single gene, in which one allele masks the expression of the other in influencing some trait. In the simplest case, if a gene exists in two allelic forms (A & B), three combinations of alleles (genotypes) are possible: AA, AB, and BB. If AB individuals (heterozygotes) show the same form of the trait (phenotype) as AA individuals (homozygotes), and BB homozygotes show an alternative phenotype, allele A is said to dominate or be dominant to allele B, and B is said to be recessive to A.”
http://en.wikipedia.org/wiki/Dominance_relationship
The term race has practically no biological foundation for human beings. Skin color or eye color or hair color isn’t what makes us human. It’s the structure of our brains, our sophisticated hands and our bipedalism.
We should replace the term race with ethnic origin.