Wednesday, October 24, 2012

Tracing the humans back to Africa

 
A2
B2



C1 -  D1

H
H5

J

K

L

L3

M

N

R

T1

T2

U

U5a

V

 
Hi friends!
This post is going to be a very important one. This post is going to discuss about our past grilling down to the first humans on this planet, their expasion and migration. To understand this post, we need to have a basic understanding of DNA, genes, haplogroup and stuff like that. These concepts have already been discussed in the previous post for the convenience of our readedrs. So, here we go!

As we discussed already, haplogroups are nothing but the group of closely related people having a common ancestor. For covenience, these haplogroups are given names with the alphabets of English starting from A to Z combined with numerals. So, I believe you would have taken a look at the above photos. They are nothing but the frequency of occurrence of the different haplogroups at different parts of the world. These set of photos are the ones that take us to the root of ourselves - the first humans. Please take a look at the photo captioned L and L3. And you know the haplogroup that is oldest of all? That is the first of the haplogroups? It is nothing but the grand parent of L3 which is L3'4'6. It is around 100,000 years old. So, L3 is the descendant of L3'4'6 which means it is the oldest among the existing haplogroups. And you see which part of the world it is seen in? Yes, it is Africa. So, this proves that first of the humans were seen in Africa and spread to the rest of the world from there. Okay, let us trace the path of this spread. See the photos with Captions A2, B2, C1, D1. These haplogroups as seen from the photo are seen in Americas. The parent to A halogroups is N, parent to B halogroups is R, for C and D halogroups the parent is M. In short, the halogroups A2, B2, C1, D1 are found in Americas and the parent halogroups are M,N,R. So now see the photos with captions M,N and R. These are found in Europe, Asia and parts of Africa (including middle East). So,  people of Americas come from Eurasia (Europe + Asia). Finally the haplogroups T1, T2 and U also share the common ancestor R.
So, careful study of this shows one thing. First humans appeared in Africa. They moved out to Eurasia (Europe + Asia) through Middle East. And finally moved to Americas from Eurpoe. So, this is a very significant post in this blog. This post serves the whole purpose for which this blog was started. But still, I believe there are many things to be explored...THE PATH WILL BE FOLLOWED.

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