Human Migration


 
 
Concept Explanation
 

Human Migration

There is a great diversity of human forms and features across the planet. The tools used to trace evolutionary relationships have also been used for studying human evolution, i.e. excavating, time dating and studying fossils as well as, determining DNA sequences. Skin colour used to be the commonest way for identifying the races due to the diversified forms of human and their features. However, there is no biological basis to the notion of human races. All humans are of a single species. This migration of humans can be summarized in following points :

  • A study of the changes in the DNA of human beings from all over the world and a study of human fossils scattered all over the globe have suggested that the first human beings originated in Africa. They lived about 200,000 years ago.
  • Some of them left Africa and migrated to West Asia. From there they migrated to Central Asia, South Asia and East Asia.
  • One group of their descendants migrated down to the islands of Indonesia and to the Philippines and Australia, while another group travelled to Europe.Another group migrated to northern Asia, while yet another group went to North America and onward to South America.
  • · Even after migration  to different geographical zone of the world,all human share the same gene pool and hence all modern humans belong to the same species - Homo sapiens.
  • There are, however, a large number of genes in the gene pool that serve as the source of individual variations. It is for this reason that no two individuals are identical in looks, abilities, behaviour etc.
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