By Babu G. Ranganathan
Inter-racial mixing isn't what many people think. I heard about one white person who believed that if whites and blacks have kids they're destroying the white race. No, they're not. The genes for the white race are still there, but their opportunity to be singularly expressed in the children are decreased.
Would you say that genes for blonde hair are destroyed if blondes and brunettes mix sexually? Of course not! The genes for blonde hair still continue to exist, but their opportunity for expression in the population have decreased.
The traits for "race," of course, are more complex than just hair color but the principle is the same.
A person can be 100% white and have black ancestry just like someone who is blonde can have ancestors with black hair. Again, with "race" it's more complex, but it is possible to be born pure 100% Caucasian and yet have black ancestry. That's why the old "one-drop" rule used to describe people of mixed black and white ancestry as being 1/2 black, 1/4 black, or 1/8th black is unscientific. You can have 1/4 black ancestry and still be 100% white. It is scientific to say that someone has a 1/4 black ancestry, but it is not scientific to say that someone is 1/4 black because of it.
If there is something we can call "half and half," it's in how genes are expressed when they come together, but the actual genes themselves are not diluted or changed from the inter-racial mixing. For example, as far as we know, President Barack Obama is a child of a fully black father and a fully white mother. He has 100% genes for the white race and 100% genes for the black race, but what we see (that is what is expressed physically when those genes come together) is determined by which genes are dominant. In certain cases, depending upon the genes, there is no dominant or recessive but a melding expression of the genes that come together. However, these genes (in the reproductive organs) can also be segregated (come apart separately) and be passed on separately to offspring.
Actually, the one-drop rule went further in stating that any black ancestry made someone black, regardless of how little that ancestry is.
It's possible for Americans with black and white ancestry to have one sibling with mixed genes, another sibling who is 100% black, another sibling who is 100% white. It depends on how the genes are distributed. The Cosby Show was an excellent illustration of that!
There are many whites in America that have Native American ancestry but this does not necessarily translate racially into a particular descendent of that ancestry as having Native American genes. Many Americans with Native American ancestry are 100% Caucasian.
Every dog breeder knows that you can get a pure-breed (or pure race) from a mutt but you can't get a mutt from a pure-breed! A mutt carries genes for producing pure-breeds, but pure-breeds don't carry genes for producing any other race than their own.
Many often wonder how all the varieties or races of people could have come from the same original human ancestors. Well, in principle, that's no different than asking how children with different color hair (i.e., blond, brunette, brown, red) can come from the same parents who both have black hair.
Just as some individuals today carry genes to produce descendants with different color hair and eyes, humanity's first parents (Adam and Eve), possessed genes to produce all the variety and races of humans. You and I today may not carry the genes to produce every variety or race of humans, but humanity's first parents did possess such genes.
All varieties of humans carry genes for the same basic traits, but not all humans carry every possible variation of those genes. For example, one person may be carrying several variations of the gene for eye color (i.e., brown, green, blue), but someone else may be carrying only one variation of the gene for eye color (i.e., brown). Both carry the basic gene for eye color but both don't carry every variety of that gene. Thus, both will have different abilities to affect the eye color of their offspring.
Some parents with black hair, for example, are capable of producing children with blond hair, but their blond children (because they inherit only recessive genes) will not have the ability to produce children with black hair unless they mate with someone else who has black hair. If the blond descendants only mate with other blondes then the entire line and population will only be blond even though the original ancestor was black-haired.
Ultimately, we are all one, just variations of that oneness.
The author, Babu G. Ranganathan, has his bachelor's degree with concentrations in theology and biology and has been recognized for his writings on religion and science in the 24th edition of Marquis "Who's Who In The East." The author's articles may be accessed at www.religionscience.com.
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