Based on what we know from archaeological finds, genetic and fossil evidence, radiometric and carbon dating, I would have to finish that the origins of human life began in Africa. However, I have to strongly disagree with Dr. Frances Welsing's (1969-1974 publications) conclusions on skin color and albinism. Yet, I understand how it was inherent to arrive at the conclusions that Dr. Welsing's came to when one considers the advances made in analytical and genetic testing in the past 40 to 50 years.
Today we now know that albinism is inherited to both dark and light skin races of the planet and its occurrence is about 1 in 20,000 people. We know from genetic and molecular biological explore that citizen with albinism do carry the melanocytes needed to yield melanin. These explore investigations have further showed us that the enzyme tyrosinase is needed to convert the melanocyte bodies into melanin. Yet citizen with albinism yield the inactive form of the tyrosinase enzyme. Albinism citizen also yield high concentrations of tyrosinase inhibitors which would prevent the conversion of melanocytes to melanin even if the enzyme was present. These biological findings by comparison why the skin of the white citizen of modern-day Europe and Asia is not as dark as citizen from African and the equatorial regions of the earth. Whites yield a aggregate of the active and inactive form of tyrosinase and there is also present at low attention levels tyrosinase inhibitors whose molecular structures have not been wholly identified. Thus, white and fairer-skin citizen have lower levels of melanin in their bodies, and particularly in their outer skin tissue even though the level of melanocytes in whites is no different-than those levels found in darker skin people.
Melanin has the chemical characteristic of thoughprovoking Uv radiation from sunlight and converting this wavelength of light into heat and energy. This absorbing-conversion process of melanin acts as a type of innate safety from inherent damage to skin tissue from the sunlight due to prolong exposure. From geological, paleontological, anthropological and climate studies, we know that somewhere in the middle of 12,000 to 600,000 years ago the planet climatic characteristic was highly cold with interment bouts of slightly warmer weather, and that all of the continents of the world were connected. Thus, when inspecting evolutionary pre-human adaptive traits, the challenges for the pre-human species to carry on exposure to Uv radiation from sunlight for prolong periods of time were approximately nonexistent. Therefore, the need for pre-human environmental adaptation to warm temperatures would be at minimum for survival.
The pre-human environmental adaptations to hotter climates came later (approx. From 12,000 to 40,000 years ago) when the earth's climatic characteristic begin to rise and stabilize to the types of temperatures that are present today. As for migrations out of Africa into Europe, new explore (2006) suggest that a first exodus of pre-humans (hominids) began colse to 400,000 years ago followed by a final wave of pre-modern day humans (homo-sapiens) about 120,000 years ago while the climate was still cold and thus, the out of Africa exodus would be more attributed to a fact of easy tube by way of linked land masses rather than because of some "tribal" indifference to skin color.
As for race mixing, many ideas and concepts about black or white gene dominance was abundant in the black and white intellectual communities in the 40's, 50's, 60's, and early 70's. Yet today, we see blacks and whites intermarrying producing offspring with mixtures and genetics of both parents. It is the racism of white America and European history that define a man by skin color based on his parents. Thus, Euro-centric ideologies would finish that when a black man and a white woman produced a child, the child would all the time be considered 99% black. These ideas and concepts were not derived at based on human genetic science but merely reflected nationalistic racial attitudes. This black status was put on these mixed children even if they looked more white than black. You don't have to look too far to see clear evidence of these racial concepts in American history. Just look at all of the black children who came by way of the slave scholar raping black female slaves. Many of these black female slaves were very dark skin but their babies still came out light skin. What dominate gene! Why do you think we have so many light-skin blacks today? So even if whites did believe in such a idea about preserving the race by not mixing with darker skin citizen (although this seems more of a myth since whites effortlessly raped their slaves) it was an idea or belief born out of ignorance. Likewise, if blacks think that they could eradicate the white race by intermarrying because of some dominate black gene they had good think again. In the end you are going to yield off-spring whose skin color is not too black or too white! Beside, even white citizen are citizen of color. They are darker than citizen who have albinism and they absolutely don't look white. Try this quick experiment. Get a white someone to stand level up hands to side. Next, pick up a piece of computer paper and hold next to white person's face. Search for the differences in hue and article your observations. Do article your results in a true and unbiased manner.
Based on the scientific evidence that is clearly abundant today, I suggest that the primary human species was neither black nor white but albino. If albinism is a flaw in the genetic coding of modern-day humans as many scientists and researchers have concluded, then this flaw is nothing more than a recessive gene that the modern-day human species has been carrying colse to with him for the last 120,000 years. I personally believe this is a sign to mankind that at one time we were all one group of pre-human creatures and that our present-day observed corporeal differences is nothing more than the effect of geographical and environmental evolutionary circumstances.
