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The Neanderthal genetics in North africans is all linked to population expansions into africa during the neolithic, bronze age and during Arab expansion across North africa. In fact most North african's demonstrate a very high level of OOA eurasian introgression. This is why the analysis is usually limited to Sub-saharan african tribes--though the neolithic pastoralist penetrated pretty deep into africa.

Timing of the admixture is measurable by linkage disequilibrium--or the length of genomic segments that come from one population or another.

Admixture with Neanderthals at a minimum by about 50-60K years ago. This date is skewed young as their is good evidence that more than one admixture event took place.

Denisovan age range is indeed 44-54K years ago. However, this again could be skewed to the young end as it is possible that introgression took place up to 3 different times.


Did I misunderstand your hypothesis and that humans emerged out of Australia and Africa after Toba? I was fairly certain your theory was just Australia.


An australian origin has issues for multiple reasons--the high genomic diversity in Africa (generally a sign of depth of time for a population), the fact that ALL mtDNA and Y chromosomal data roots in Africa not Australia based on phylo-geographical studies.

"All Australian lineages are confirmed to fall within the mitochondrial founder branches M and N and the Y chromosomal founders C and F, which are associated with the exodus of modern humans from Africa ≈50–70,000 years ago. The analysis reveals no evidence for any archaic maternal or paternal lineages in Australians, despite some suggestively robust features in the Australian fossil record, thus weakening the argument for continuity with any earlier Homo erectus populations in Southeast Asia." [www.pnas.org]

All extant human populations with deep maternal ancestry in Eurasia carry mtDNA lineages that fall within a single haplogroup, L3- this is firmly rooted in Africa-no where else



Autosomal microsatellite and SNP coalescence times are, negatively correlated with distance from Africa, suggesting a single dispersal and serial founder effects going east. Also you have a general decrease in population diversity as one gets further from Africa-demonstrating serial founder effects.


The genetic and archaeological data is rather clear on this. The dates may move a bit up and down.

Their is less and less doubt that AMH made it out of Africa and perhaps as far as China as much as 100K years ago. But these early migrants have left no genetic legacy on any modern population tested so far. Everything, genetically speaking, root phylogeny wise into africa.

This may change but that is where the vast majority of the data now stands.

Lee

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Subject Views Written By Posted
The Into Africa Theory of Human Evolution 4619 Bruce R. Fenton 01-Jun-17 11:19
Re: The Into Africa Theory of Human Evolution 1148 Susan Doris 02-Jun-17 05:45
Re: The Into Africa Theory of Human Evolution 829 Bruce R. Fenton 02-Jun-17 06:56
Related threads on GHMB 898 drrayeye 02-Jun-17 17:06
Re: Related threads on GHMB 733 Bruce R. Fenton 03-Jun-17 10:19
Re: The Into Africa Theory of Human Evolution 771 laughin 05-Jun-17 21:06
Re: The Into Africa Theory of Human Evolution 764 Bruce R. Fenton 06-Jun-17 04:03
Re: The Into Africa Theory of Human Evolution 766 SallyA 07-Jun-17 02:28
Re: The Into Africa Theory of Human Evolution 646 Bruce R. Fenton 07-Jun-17 04:40
Re: The Into Africa Theory of Human Evolution 991 Thanos5150 06-Jun-17 14:29
Re: The Into Africa Theory of Human Evolution 775 SallyA 07-Jun-17 02:55
Re: The Into Africa Theory of Human Evolution 730 Bruce R. Fenton 07-Jun-17 05:47
... 760 SallyA 08-Jun-17 04:00
Re: The Into Africa Theory of Human Evolution ..-_-.. question one 671 Bruce R. Fenton 08-Jun-17 04:37
... 769 SallyA 08-Jun-17 06:51
Re: The Into Africa Theory of Human Evolution 655 Thanos5150 07-Jun-17 16:15
Re: The Into Africa Theory of Human Evolution 784 Thanos5150 07-Jun-17 19:38
Re: The Into Africa Theory of Human Evolution 750 Bruce R. Fenton 08-Jun-17 03:20
Re: The Into Africa Theory of Human Evolution 635 Bruce R. Fenton 07-Jun-17 05:33
Re: The Into Africa Theory of Human Evolution 1015 Thanos5150 07-Jun-17 16:08
Re: The Into Africa Theory of Human Evolution 694 SallyA 08-Jun-17 05:17
... 770 SallyA 08-Jun-17 06:06
Re: The Into Africa Theory of Human Evolution 735 Bruce R. Fenton 09-Jun-17 02:19
Re: The Into Africa Theory of Human Evolution -- thank you 694 SallyA 09-Jun-17 03:47
Re: The Into Africa Theory of Human Evolution 857 Thanos5150 11-Jun-17 16:13
Re: The Into Africa Theory of Human Evolution 639 Bruce R. Fenton 12-Jun-17 09:26
Re: The Into Africa Theory of Human Evolution 665 Bruce R. Fenton 09-Jun-17 02:03
Re: The Into Africa Theory of Human Evolution 744 Thanos5150 09-Jun-17 23:54
OOA strikes back - the sequel 792 laughin 08-Jun-17 13:09
Re: OOA strikes back - the sequel 693 Bruce R. Fenton 08-Jun-17 15:37
Re: OOA strikes back - the sequel 700 Thanos5150 08-Jun-17 17:23
Re: The Into Africa Theory of Human Evolution 676 Robert Jameson 11-Jun-17 06:13
Re: The Into Africa Theory of Human Evolution 684 Bruce R. Fenton 11-Jun-17 11:46
Re: The Into Africa Theory of Human Evolution 829 Robert Jameson 12-Jun-17 05:34
Re: The Into Africa Theory of Human Evolution 684 dong 12-Jun-17 06:51
Re: The Into Africa Theory of Human Evolution 750 Robert Jameson 12-Jun-17 13:32
Re: The Into Africa Theory of Human Evolution 762 Bruce R. Fenton 12-Jun-17 09:19
Re: The Into Africa Theory of Human Evolution 651 Robert Jameson 12-Jun-17 12:40
Re: The Into Africa Theory of Human Evolution 720 Susan Doris 14-Jun-17 05:02
Re: The Into Africa Theory of Human Evolution 726 Robert Jameson 14-Jun-17 05:45
Re: The Into Africa Theory of Human Evolution 750 michael seabrook 13-Jun-17 22:09
Re: The Into Africa Theory of Human Evolution 755 Robert Jameson 13-Jun-17 00:51
Re: The Into Africa Theory of Human Evolution 652 SallyA 13-Jun-17 01:03
Re: The Into Africa Theory of Human Evolution 634 Robert Jameson 13-Jun-17 02:44
Re: The Into Africa Theory of Human Evolution. -- off topic .. senmutt tomb. .. Giza hosts an inland sea 827 SallyA 13-Jun-17 02:59
Re: The Into Africa Theory of Human Evolution. -- off topic .. senmutt tomb 617 Robert Jameson 13-Jun-17 03:39
Re: The Into Africa Theory of Human Evolution. -- off topic .. senmutt tomb 686 SallyA 13-Jun-17 04:04
Re: The Into Africa Theory of Human Evolution 739 Thanos5150 14-Jun-17 15:55
Re: The Into Africa Theory of Human Evolution 810 Robert Jameson 14-Jun-17 17:54
Re: The Into Africa Theory of Human Evolution 637 michael seabrook 16-Jun-17 21:03
Re: The Into Africa Theory of Human Evolution 657 Robert Jameson 16-Jun-17 22:47
Re: The Into Africa Theory of Human Evolution Excellent and ... 728 SallyA 16-Jun-17 23:39
Re: The Into Africa Theory of Human Evolution Excellent and ... 726 Robert Jameson 17-Jun-17 09:44
Re: The Into Africa Theory of Human Evolution 632 Susan Doris 17-Jun-17 14:17
Re: The Into Africa Theory of Human Evolution 692 Robert Jameson 18-Jun-17 02:43
Re: The Into Africa Theory of Human Evolution 647 Susan Doris 18-Jun-17 09:24
Re: The Into Africa Theory of Human Evolution 715 Bruce R. Fenton 18-Jun-17 11:04
Re: The Into Africa Theory of Human Evolution 705 Robert Jameson 18-Jun-17 11:14
Re: The Into Africa Theory of Human Evolution 615 Robert Jameson 18-Jun-17 11:04
Unfair diversion 545 drrayeye 18-Jun-17 21:35
Re: Proto-sumerian ... Ukraine ... a bit late for into Africa I fear, probably mis-posted 816 SallyA 19-Jun-17 03:00
Re: Unfair diversion 745 Susan Doris 19-Jun-17 05:20
Unfair diversion for sure 636 drrayeye 19-Jun-17 05:47
Re: Unfair diversion for sure 696 Susan Doris 20-Jun-17 04:56
Robert's challenge 747 drrayeye 20-Jun-17 07:24
Re: Robert's challenge 629 Robert Jameson 26-Jun-17 11:17
Tangential 621 drrayeye 27-Jun-17 05:03
Re: Tangential 629 Robert Jameson 27-Jun-17 06:12
Wrong board 648 drrayeye 27-Jun-17 06:38
Re: Wrong board 604 Robert Jameson 27-Jun-17 08:03
Re: Tangential 645 Eddie Larry 27-Jun-17 15:59
Re:Susan, do you know of a time line? 648 SallyA 19-Jun-17 17:48
Re: Unfair diversion 712 Thanos5150 19-Jun-17 13:44
Re: Unfair diversion 632 drrayeye 19-Jun-17 15:40
Re: Unfair diversion 744 Robert Jameson 19-Jun-17 23:14
Re: Unfair diversion 639 drrayeye 20-Jun-17 00:31
Re: Unfair diversion 703 Robert Jameson 20-Jun-17 10:19
kicking a dead horse 648 drrayeye 20-Jun-17 14:36
Re: kicking a dead horse 557 Robert Jameson 20-Jun-17 23:49
Staying on topic 640 drrayeye 21-Jun-17 01:15
Re: Unfair diversion 644 Thanos5150 20-Jun-17 15:24
Hominids vs Homo. most obvious difference -- thumbs on feet 578 SallyA 20-Jun-17 15:59
Re: Hominids vs Homo. most obvious difference -- thumbs on feet 560 Bruce R. Fenton 26-Jun-17 10:21
Interesting 627 drrayeye 27-Jun-17 06:50
Re: Interesting 515 Bruce R. Fenton 27-Jun-17 22:32
Re: Hominids vs Homo. most obvious difference -- thumbs on feet 517 Eddie Larry 28-Jun-17 04:37
Re: Hominids vs Homo. most obvious difference -- thumbs on feet 865 Bruce R. Fenton 28-Jun-17 04:41
Re: Unfair diversion 594 drrayeye 20-Jun-17 15:59
Off Topic: re: factors which alter .. Earth's shields don't block cygnets ... nor neutrinos, ... 567 SallyA 20-Jun-17 21:13
Re: Unfair diversion 545 SallyA 21-Jun-17 01:37
Focus 643 drrayeye 21-Jun-17 07:30
Re: Focus 717 Bruce R. Fenton 26-Jun-17 10:26
Re: Focus 611 Susan Doris 26-Jun-17 16:51
Re: Focus... ah, my bad ... 519 SallyA 11-Feb-18 19:40
Re: The Into Africa Theory of Human Evolution 717 Bruce R. Fenton 17-Jun-17 12:12
Re: The Into Africa Theory of Human Evolution 647 Robert Jameson 26-Jun-17 06:32
Re: The Into Africa Theory of Human Evolution 633 Bruce R. Fenton 26-Jun-17 11:57
Re: The Into Africa Theory of Human Evolution 770 Robert Jameson 26-Jun-17 13:59
Re: The Into Africa Theory of Human Evolution 459 lalbee 16-Feb-18 13:39
Re: The Into Africa Theory of Human Evolution 441 lalbee 17-Feb-18 02:25
Re: The Into Africa Theory of Human Evolution 463 Bruce R. Fenton 17-Feb-18 04:13
Re: The Into Africa Theory of Human Evolution 436 lalbee 17-Feb-18 05:56
Re: The Into Africa Theory of Human Evolution 480 Bruce R. Fenton 17-Feb-18 06:27
Re: The Into Africa Theory of Human Evolution 610 lalbee 18-Feb-18 15:17
Re: The Into Africa Theory of Human Evolution 469 drrayeye 21-Feb-18 13:48
Re: The Into Africa Theory of Human Evolution 451 lalbee 22-Feb-18 16:45
Re: The Into Africa Theory of Human Evolution 445 Robert Jameson 22-Feb-18 19:39
Re: The Into Africa Theory of Human Evolution 861 Bruce R. Fenton 22-Feb-18 23:07
Re: The Into Africa Theory of Human Evolution 469 Bruce R. Fenton 22-Feb-18 23:00


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