The ancient story of migration: the biology of parental lineage 

        There is a concept in genetics, called hyaplogroup. It's sound strange, the meaning of hyaplogroup in hindi is vansh. There are two types of vansh (hyaplogroup) , 1st is matrilineal hyaplogroup & 2nd is patrilineal hyaplogroup. It's propagate through our DNA. The patrilineal hyaplogroup propagate through Y cromosome (father to son) . And the matrilineal hyaplogroup propagate through mother to children. 

    The mitochondrial DNA we have in our body, we get that through our mother & only female can transmit it. we get the mitochondrial (the power house of cell) in our cell through our mother & the DNA in mitochondrial or the mitochondrial DNA, we get that through our mother.

    If we study the mutation on it, then we can get the older mutations & we can also date it (how many times before the mutations was happened). And according to this we also can make the family tree. So now the time we have many family tree or vansh, in which the most oldest non-african hyaplogroups (vansh) were spreads from india. 

  The hyaplogroup F is a patrilineal hyplogroup & the hyaplogroup F is the most oldest non-african hyaplogroup, which origin was started from india.

      Similarly in the matrilineal hyaplogroup, the most oldest non-african hyaplogroups are M & N, which are also originated from indian subcontinent. Which means the most oldest non-african lineages were originated from indian sub-continent. And before 60-70 thousend years. they migrates them self from indian sub-continent to other subcontinent.

   When out - of africa migration was happened, which is belive happens before arround 70-80 thousands years in baballmangdeb state (present day uthupia, zibuti & Arabian) most likely. In these periode of time there was greenery, but it was not enough to sustain a big population. Sm the coastal regions emigrated them self, untile they reached indian subcontinent.

 These time of periode the indian sub-continent was massively fertiled & so big (where a big population could be sustain). And for these resons the indian sub-continent was became the original out of africa founder zone & the first settled population were established in indian sub-continent. When was the population spread (out of controle), they emigrated them self to other sub-continent. It was a very long process (which takes thousands of years).

     The most oldest non-africane hyaplogroup was born in indian sub-continent. 

  The genetics study say's that peoples of lndia, Pakistan, Afghanistan, the genetics of these country's people, are morally same. And also the genetics of north indian & south indian people are morally same.

Credit- Abhijit Chavda - Dark India-Pakistan History NOT Taught To YOU in School | The Ranveer Show हिंदी 91