Mysteries :  The Official GrahamHancock.com forums
For serious discussion of the controversies, approaches and enigmas surrounding the origins and development of the human species and of human civilization. (NB: for more ‘out there’ posts we point you in the direction of the ‘Paranormal & Supernatural’ Message Board). 
Welcome! Log InRegister
[www.cell.com]

Quote

Chad Genetic Diversity Reveals an African History Marked by Multiple Holocene Eurasian Migrations
Understanding human genetic diversity in Africa is important for interpreting the evolution of all humans, yet vast regions in Africa, such as Chad, remain genetically poorly investigated. Here, we use genotype data from 480 samples from Chad, the Near East, and southern Europe, as well as whole-genome sequencing from 19 of them, to show that many populations today derive their genomes from ancient African-Eurasian admixtures. We found evidence of early Eurasian backflow to Africa in people speaking the unclassified isolate Laal language in southern Chad and estimate from linkage-disequilibrium decay that this occurred 4,750–7,200 years ago. It brought to Africa a Y chromosome lineage (R1b-V88) whose closest relatives are widespread in present-day Eurasia; we estimate from sequence data that the Chad R1b-V88 Y chromosomes coalesced 5,700–7,300 years ago. This migration could thus have originated among Near Eastern farmers during the African Humid Period. We also found that the previously documented Eurasian backflow into Africa, which occurred 3,000 years ago and was thought to be mostly limited to East Africa, had a more westward impact affecting populations in northern Chad, such as the Toubou, who have 20%–30% Eurasian ancestry today. We observed a decline in heterozygosity in admixed Africans and found that the Eurasian admixture can bias inferences on their coalescent history and confound genetic signals from adaptation and archaic introgression.

Options: ReplyQuote


Subject Views Written By Posted
DNA Study Reveals AE Closely Related to Levant and Anatolian Populations 2782 Thanos5150 02-Jun-17 15:42
Re: DNA Study Reveals AE Closely Related to Levant and Anatolian Populations 792 Laird Scranton 02-Jun-17 15:53
Re: DNA Study Reveals AE Closely Related to Levant and Anatolian Populations 707 Thanos5150 02-Jun-17 18:08
Re: DNA Study Reveals AE Closely Related to Levant and Anatolian Populations 740 Laird Scranton 02-Jun-17 20:08
Re: DNA Study Reveals AE Closely Related to Levant and Anatolian Populations 781 Thanos5150 02-Jun-17 23:19
Re: DNA Study Reveals AE Closely Related to Levant and Anatolian Populations 722 Laird Scranton 03-Jun-17 03:56
Re: DNA Study Reveals AE Closely Related to Levant and Anatolian Populations 675 Notinham 03-Jun-17 05:04
Re: DNA Study Reveals AE Closely Related to Levant and Anatolian Populations 629 Thanos5150 03-Jun-17 14:49
Re: DNA Study Reveals AE Closely Related to Levant and Anatolian Populations 640 Notinham 03-Jun-17 16:00
Re: DNA Study Reveals AE Closely Related to Levant and Anatolian Populations 909 Eddie Larry 04-Jun-17 00:38
Re: DNA Study Reveals AE Closely Related to Levant and Anatolian Populations 478 Heliograph 29-Jun-17 11:06
Re: DNA Study Reveals AE Closely Related to Levant and Anatolian Populations 565 Eddie Larry 29-Jun-17 14:16
Re: DNA Study Reveals AE Closely Related to Levant and Anatolian Populations 617 Thanos5150 29-Jun-17 16:33
Re: DNA Study Reveals AE Closely Related to Levant and Anatolian Populations 683 Notinham 02-Jun-17 16:06
Ancient Egyptians were closely related to people who lived along the eastern Mediterranean 690 HH Holmes 26-Jun-17 19:38
Mod Note > Duplicate Topic Merged 530 Dr. Troglodyte 27-Jun-17 12:39
Re: DNA Study Reveals AE Closely Related to Levant and Anatolian Populations 580 Heliograph 29-Jun-17 10:53
Re: DNA Study Reveals AE Closely Related to Levant and Anatolian Populations 612 MDaines 29-Jun-17 14:06
Re: DNA Study Reveals AE Closely Related to Levant and Anatolian Populations 667 Thanos5150 29-Jun-17 16:25
Re: DNA Study Reveals AE Closely Related to Levant and Anatolian Populations 587 MDaines 30-Jun-17 10:56
Re: DNA Study Reveals AE Closely Related to Levant and Anatolian Populations 670 Thanos5150 30-Jun-17 13:56
Egyptian Style Head? 554 Dr. Troglodyte 30-Jun-17 14:30
Re: Egyptian Style Head? 618 Eddie Larry 30-Jun-17 14:36
Re: DNA Study Reveals AE Closely Related to Levant and Anatolian Populations 610 MDaines 01-Jul-17 07:53
Re: DNA Study Reveals AE Closely Related to Levant and Anatolian Populations 635 Thanos5150 01-Jul-17 17:28
Re: DNA Study Reveals AE Closely Related to Levant and Anatolian Populations 554 Eddie Larry 01-Jul-17 18:17
Re: DNA Study Reveals AE Closely Related to Levant and Anatolian Populations 731 Thanos5150 01-Jul-17 18:38
Re: DNA Study Reveals AE Closely Related to Levant and Anatolian Populations 682 MDaines 01-Jul-17 19:58
Re: DNA Study Reveals AE Closely Related to Levant and Anatolian Populations 668 Thanos5150 03-Jul-17 14:05
Re: DNA Study Reveals AE Closely Related to Levant and Anatolian Populations 589 Thanos5150 29-Jun-17 16:39
Re: DNA Study Reveals AE Closely Related to Levant and Anatolian Populations 467 R Avry Wilson 29-Jun-17 17:10
Cuneiform vs Hieroglyph 682 Dr. Troglodyte 29-Jun-17 18:22
Re: Cuneiform vs Hieroglyph 589 Thanos5150 01-Jul-17 20:19
Re: Cuneiform vs Hieroglyph 657 Thanos5150 08-Jul-17 16:12
Re: Cuneiform vs Hieroglyph 348 Eddie Larry 08-Jul-17 18:04
Re: Cuneiform vs Hieroglyph 534 Thanos5150 08-Jul-17 19:30
Re: DNA Study Reveals AE Closely Related to Levant and Anatolian Populations 474 Thanos5150 30-Jun-17 20:09
Re: DNA Study Reveals AE Closely Related to Levant and Anatolian Populations 536 R Avry Wilson 01-Jul-17 01:55
Re: DNA Study Reveals AE Closely Related to Levant and Anatolian Populations 512 Thanos5150 01-Jul-17 03:15
Re: DNA Study Reveals AE Closely Related to Levant and Anatolian Populations 604 R Avry Wilson 02-Jul-17 22:02
Re: DNA Study Reveals AE Closely Related to Levant and Anatolian Populations 571 MDaines 03-Jul-17 08:04
Re: DNA Study Reveals AE Closely Related to Levant and Anatolian Populations 595 Thanos5150 03-Jul-17 14:10
Re: DNA Study Reveals AE Closely Related to Levant and Anatolian Populations 529 Thanos5150 03-Jul-17 16:58
Re: DNA Study Reveals AE Closely Related to Levant and Anatolian Populations 597 R Avry Wilson 03-Jul-17 22:56
Re: DNA Study Reveals AE Closely Related to Levant and Anatolian Populations 439 Thanos5150 04-Jul-17 21:55
The scientific study 458 drrayeye 04-Jul-17 11:09
Re: DNA Study Reveals AE Closely Related to Levant and Anatolian Populations 587 Notinham 03-Jul-17 14:17
Re: DNA Study Reveals AE Closely Related to Levant and Anatolian Populations 583 Brian Patterson 04-Jul-17 17:58
The genetic evidence 642 drrayeye 04-Jul-17 19:48
Re: The genetic evidence 490 Brian Patterson 05-Jul-17 12:45
Re: The genetic evidence 495 drrayeye 05-Jul-17 15:40
Re: DNA Study Reveals AE Closely Related to Levant and Anatolian Populations 714 lostsheep 04-Jul-17 22:34


Sorry, only registered users may post in this forum.