Is it true we all come from the black African race

Originally posted by Aster Thrax Eupator ...And there! You've all come to the same conclusion as everyone else has, for over hundereds of years, so what was the point of discussing it?

Originally posted by omshanti Originally posted by pinguin If Khoi-Sans are Black or not Black is not as important as to notice the following. If we look at them carefully we can find in that group of humans features of all the races of the world. I was just curious. Do you mean that we can find the features of all the races of the world present in every Khoi-San person, or that there are people within the khoi-Sans who have different racial features parallel to all the races of the world?

find out pictures of the Khoi-sans on the web and post in here to discuss them...

Pinguin you wanted to see people of the

Khoisan
Total population
Regions with significant populations
Southern Africa
Languages
Khoisan languages
Religions
Animist
Related ethnic groups
perhaps Sandawe

Originally posted by omshanti Originally posted by pinguin If Khoi-Sans are Black or not Black is not as important as to notice the following. If we look at them carefully we can find in that group of humans features of all the races of the world. I was just curious. Do you mean that we can find the features of all the races of the world present in every Khoi-San person, or that there are people within the khoi-Sans who have different racial features parallel to all the races of the world?

khoisans usualy have slanted eyes and are short with that yellowish brown skin.





In terms of DNA Ethiopians are thought to be the oldest form of humanity. Humans originated from Ethiopia and spread throughout the world.

I'm convinced man first came out of SE.Asia! The very short stature Flores type of man was predominant in the early stages of human evolution. Perhaps there was a land bridge to Africa?

As far as I know, The Khoisan group is earlier than the Ethiopians, but these later group is in the path of the development of all groups in Eurasia.

Originally posted by Surmount Then through time the Africans spread out to other regions of the world and physically adapted to the climate they traveled to. Overtime They physically started changing to fit there enviroment.

You almost got how evolution works, and this is a great moment to remind everyone how it really does. Every new human has natural mutations. Some are fatal, and the conceptus never makes it to life, some are just weird or seemingly useless, but if you are born and survive, you will pass your weird and useless traits if you manage to reproduce.

With humans it would have worked like this. A moving population of humans get to a place where there is less sun, so the darker skinned people got to have less vitamin D, which is naturally produced by our bodies when exposed to the sun. Lack of vitamin D would makes calcium absorption hard, which produces brittle bones. (Read more about what happens when you do not get enough vitamin D here http://www.sciencenews.org/articles/20050430/food.asp)

The end result is that brittle bones may have killed the darker skinned humans before they reproduced, leaving the genetic freaks with light skin alive, and these passing their genes to their children.

Let me repeat this part again because people often missed it Evolution works through death. Humans don't adapt; populations adapt. The poor girl with dark skin who move too much to the north didn't develop lighter skin. She died, and those who were genetically lighter made it to reproduction.

If you think about it, we are all the children of mutants--rather cool, I would say.

Almazy, your pictures are very beautiful, thanks.

[edit] Oldest human group?

According to Knight et al. (2003) Y-haplogroup A, the most diverse or oldest-diverging Y haplogroup transmitted purely by patrilineal descent, is today present in various Khoisan tribes at frequencies of 12-44%, and the other Y-haplogroups present have been formed by recent admixture of Bantu male lineages E3a (18-54%), and in some tribes, noticeable Pygmy traces are visible (B2b). The Khoisan also show the largest genetic diversity in matrilineally transmitted mtDNA of all human populations. Their original mtDNA haplogroups L1d and L1k are one of the oldest-diverging female lineages as well. However, analysis of neutral autosomal (inherited through either parent) genes finds that the Khoisan are similar to other sub-Saharan African populations.

The presence of Haplogroup A, especially the subclade A3b2, in East Africa suggests some ancient connection between those populations and the Khoisan. This may not be a simple migration in one direction, but the result of various movements of people in Eastern and Southern Africa over tens of thousands of years, followed by the recent Bantu expansion separating the two regions.

One interpretation is that the Khoisan are the earliest-diverging human group, or even a group that has preserved the original human lifestyle along with genetics. More conservatively, it can be said that the patrilineal or matrilineal descent of most individuals in most other human groups have passed through common genetic bottlenecks that are later than the most recent common patrilineal ancestor or most recent common matrilineal ancestor shared by all humans, and that the ancestors of the Khoisan avoided these particular bottlenecks. Such bottlenecks might be associated simply with the chance reproductive success of particular males, or with the settlement and subsequent expansion of a small group (e.g. modern humans venturing out of Africa, or the Sahara Pump Theory, or recovery from disasters like the Toba catastrophe) or have even more complex causes.

This does not show that the Khoisan were particularly isolated through history and prehistory; in fact, the autosomal genes demonstrate interchange with other African populations.