...
Post A Reply
my profile
|
directory
login
|
register
|
search
|
faq
|
forum home
»
EgyptSearch Forums
»
Egyptology
»
1- Basic database of Nile Valley studies
» Post A Reply
Post A Reply
Login Name:
Password:
Message Icon:
Message:
HTML is not enabled.
UBB Code™ is enabled.
[QUOTE]Originally posted by the lioness,: [QB] R1b comes from outside Africa and is a sub clade of R-M207 A sub clade of R1b is the V88 mutation and it evolved from R1b while inside Africa The Gonzalez article only regards the spread direction of V88 while in Africa Not the origin of the parent of the V88 allele which is Haplogroup R [b] The genetic landscape of Equatorial Guinea and the origin and migration routes of the Y chromosome haplogroup R-V88. [/b] Eur J Hum Genet. 2013 Mar;21(3):324-31. Gonzalez et al 2013 [i]Apart from the aforementioned haplogroups, some studies have reported unexpectedly high frequencies of haplogroup R1b1-P25 in some African populations.5, 6, 7 This haplogroup is thought to have originated in Europe, and its high frequencies in Central-West African countries have been explained through a migration back to Africa in prehistoric times, mediated in Africa by speakers of the Chadic family of Afro-Asiatic languages.6, 7 [b]The arrival of this ethnic group to Lake Chad from the Proto-Afro-Asiatic homeland in Eastern Africa has been explained by two different hypotheses.[/b] Blench's theory (the ‘inter-Saharan' hypothesis)8 suggests that Chadic speakers arrived at the Chad Basin through an east to west migration through the Sahel, whereas Ehret's theory (the ‘Trans-Saharan' hypothesis)9 suggests that they arrived from the north through a migration across the Sahara desert. The latter hypothesis has been used as the explanation for the high frequencies of the R1b1-P25 haplogroup in Central-West Africa, mainly due to its presence in speakers of other Afro-Asiatic languages in North Africa.7, 10 Nevertheless, there is still an on-going debate about the most suitable explanation for these observations... The present findings are also compatible with an origin of the V88-derived allele in the Central-West Africa, and its presence in North Africa may be better explained as the result of a migration from the south during the mid-Holocene.... According to Blench's ‘inter-Saharan' hypothesis, Chadic speakers originated during the eastward migration of a pastoralist Cushitic group, from the Nile towards the Lake Chad, with subsequent dispersion in different directions around the lake. [/i] ______________________________ ^^ As we can see the paper advocates R. Blench's "inter-Saharan hypothesis" , that is the conclusion and what Gonzalez was doing is trying to correlate Blench's migration theory with analysis of DNA, the allele V88 [URL=http://www.google.com/url?q=http://www.rogerblench.info/Archaeology/Africa/Inter-Saharan%2520hypothesis.pdf&sa=U&ved=0CBcQFjABahUKEwj0opD4sYLIAhWLOz4KHbDRDF4&usg=AFQjCNH7wFzOdb3G2FR7u0SSibbl2XaE2g]The Inter-Saharan Hypothesis, Roger Blench, 1999[/URL] [/QB][/QUOTE]
Instant Graemlins
Instant UBB Code™
What is UBB Code™?
Options
Disable Graemlins in this post.
*** Click here to review this topic. ***
Contact Us
|
EgyptSearch!
(c) 2015 EgyptSearch.com
Powered by UBB.classic™ 6.7.3