According to Spencer Wells, a geneticist, the first man lived in Africa.
Based on the DNA analysis from people in all regions of the world, every human today has descended from him, however he left in several waves of migration.
Blair Hedges, a molecular biologist at Pennsylvania State University, says that genetic evidence accurately tells us that humans are of recent origin and arose in Africa.
He proves this by saying that the African populations have the most ancient gene pairs that code for specific traits and the greatest genetic diversity, which means that they are the oldest. Hence, this evolution theory could probably true. However, there is no genetic evidence that supports the idea of intermixing.
Based on Wells’ research, the first men evolved in Africa and gradually expanded to Eurasia.
Eventually, they spread out through Australia, Middle East, Southeast Asia, China and in Europe. This was determined by studies based on the y-chromosome, which is a good tool for population studies because it is basically unchanged though generations except for random mutations.
His evidence based on DNA in the y-chromosome indicates that the migration began between 60,000 and 50,000 years ago. Factors would probably be the increase in population, which stirred competition and innovation; a change in consumption of food, language and more importantly, climate change.
I find it really interesting that such genetic studies are able to conclude the origins of man, with strong and reasonable arguments.
Having to know how all of us are connected amazes me because I have never heard of any accurate biological story ever before.
From the African, the Australian, the Asian to the European, it is proven that we all have the same blood.
It does make sense though if we do really come from the Africans because of how authentic and ancient their culture is until today.
Also, science has proven that the Africans are the oldest people around the globe.
Although these studies are found to be accurate, they are not necessarily true. Because Wells use logic as his method, then it could only be valid but not be true. (It will take another entry to expound on that, so let's just leave it there)
This theory of man is just one of the many theories that geneticists, archaeologists and historians are responsible for. However the dates of expansion and colonization may be correct, they almost appear to be too recent.
I think that most geneticists are getting data that agree with most archaeological and fossil data yet all of the different methods used for dating can generate errors.
Knowing methods of science, more fossils, archaeology and ancient DNA are still needed for the whole picture of human evolution.
However, I think that no man can prove completely without any hint of doubt, insufficiency or error concerning the real evolution of man. It is way beyond human intelligence, no matter how much we try; we are mere humans. Hence, I believe that nothing can be certain, even science cannot be certain.
But I think these studies and analysis are vital in our understanding of one’s beginning and one’s identity, to be able to develop a strong and competent species.
Do you think Adam is African?
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