Here is a true example of how two so-called “black” (negro) parents can have two twin children with one being deficient of skin melanin and the other being normal. This was the case with Esau and Jacob in Genesis 25:25. Esau was born RED and hairy as his blood shows through his skin giving him a pink or reddish complexion. When you read Genesis 25, you will notice that Jacob’s skin color is not mentioned in the chapter because he was of normal brown complexion as the rest of the descendants of Noah. The scriptures also describe Esau’s skin condition similar to that of leprosy (read Leviticus Chapter 13).
Genesis 25:25 "And the first came out red, all over like an hairy garment; and they called his name Esau."
Genesis 25:23 "And the LORD said unto her, Two nations are in thy womb, and two manner of people shall be separated from thy bowels; and the one people shall be stronger than the other people; and the elder shall serve the younger.
It is clear to see that this child that is described to be RED in his physical appearance will be the forefather of a nation (race of people) that will look and act just like him from generation to generation.
Genesis 27:40 "And by thy sword shalt thou live, and shalt serve thy brother; and it shall come to pass when thou shalt have the dominion, that thou shalt break his yoke from off thy neck."
It was prophesied that this RED race (Esau) will live by means of violence throughout their generations and will eventually come into great world power.
For more information on this subject read "Esau is Ruddy"