A human "race" is most often defined as a group of people with certain features in common which distinguish them from other groups of people. Currently there are three or four major races of humans, as the word race is commonly defined:
1. Caucasoid (55% of the world's population).
2. Mongoloid (33%)
3. Negroid (8%)
4. Astraloid (4%; the Astraloid group is often known as the Australian Aboriginal Group. Usually considered as a subgroup of the Caucasoids).
These races are distributed abound the globe throughout over 100 nations, and speak 3,000+ tribal languages and dialect.
Skin color is determined by the amount of melanin found in the skin. It provides the body with pigmentation. It allows the body to absorb UV radiation without damage.
There are several factors that determine skin color:
First, we must consider the origin of man.
God created man Genesis chapter one tells us, and when He created him he was very good. Man did not evolve over millions of years. Adam was the first man (1 Cor. 15:45) and Eve was the mother of all living (Gen.3:20). Acts 17:26. God endowed man with variability and adaptability. Whatever racial characteristics we possess or those in time past have possessed, came from the original genetic pool of Adam and Eve. There were no others. All came from the original pair.
Then we must consider the known historical and biblical facts. The line of human descent passed from Adam and Eve and their descendants to Noah and his family. It was restricted, yet passed on through Noah.
We must also consider man's migratory pattern. After the flood, men had set themselves against God and refused to inhabit the earth. They dug down and weren't budging, so God confused their languages. This caused them to migrate.
I am told that the skin coloration agent melenin is controlled by two pairs of genes. We can designate them Aa and Bb, the capital letters representing dominant genes and the small letters recessive genes. A and B produce melenan very well; being recessive, a and b produce melanin to a lesser degree.
We must also consider the heterozygous conditioning of man. By dispersing linguistically isolated groups all over the world, the Tower of Babel incident had a significant effect on the subsequent development and history of mankind. At least some of the differences which arose can be attributed to the various environments in which the people found themselves. What if lighter colored skinned people went to the equator? These people would not survive as well as those with darker skin. Likewise, people with fairer skins who moved into Scandinavian countries would be favored, since darker- skinned people could not as easily produce Vitamin D and would therefore suffer from such diseases as rickets.
The races were produced in a very short time span, and the racial variations we see today are merely an expression of the original genetic endowment of Adam and Eve as carried through to us by Noah. (above from – Source: Bert Thompson (Essays in Apologetics, vol. 5).
The subject of Racism is a despicable practice, totally foreign to the Christian teaching. Paul confronted poor Peter for his prejudice. Racism is man’s ego exalting itself.