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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 4433 Bruce R. Fenton 01-Jun-17 11:19
Re: The Into Africa Theory of Human Evolution 958 Susan Doris 02-Jun-17 05:45
Re: The Into Africa Theory of Human Evolution 780 Bruce R. Fenton 02-Jun-17 06:56
Related threads on GHMB 843 drrayeye 02-Jun-17 17:06
Re: Related threads on GHMB 675 Bruce R. Fenton 03-Jun-17 10:19
Re: The Into Africa Theory of Human Evolution 721 laughin 05-Jun-17 21:06
Re: The Into Africa Theory of Human Evolution 691 Bruce R. Fenton 06-Jun-17 04:03
Re: The Into Africa Theory of Human Evolution 707 SallyA 07-Jun-17 02:28
Re: The Into Africa Theory of Human Evolution 596 Bruce R. Fenton 07-Jun-17 04:40
Re: The Into Africa Theory of Human Evolution 873 Thanos5150 06-Jun-17 14:29
Re: The Into Africa Theory of Human Evolution 726 SallyA 07-Jun-17 02:55
Re: The Into Africa Theory of Human Evolution 663 Bruce R. Fenton 07-Jun-17 05:47
... 705 SallyA 08-Jun-17 04:00
Re: The Into Africa Theory of Human Evolution ..-_-.. question one 624 Bruce R. Fenton 08-Jun-17 04:37
... 703 SallyA 08-Jun-17 06:51
Re: The Into Africa Theory of Human Evolution 601 Thanos5150 07-Jun-17 16:15
Re: The Into Africa Theory of Human Evolution 734 Thanos5150 07-Jun-17 19:38
Re: The Into Africa Theory of Human Evolution 704 Bruce R. Fenton 08-Jun-17 03:20
Re: The Into Africa Theory of Human Evolution 585 Bruce R. Fenton 07-Jun-17 05:33
Re: The Into Africa Theory of Human Evolution 847 Thanos5150 07-Jun-17 16:08
Re: The Into Africa Theory of Human Evolution 640 SallyA 08-Jun-17 05:17
... 712 SallyA 08-Jun-17 06:06
Re: The Into Africa Theory of Human Evolution 685 Bruce R. Fenton 09-Jun-17 02:19
Re: The Into Africa Theory of Human Evolution -- thank you 643 SallyA 09-Jun-17 03:47
Re: The Into Africa Theory of Human Evolution 766 Thanos5150 11-Jun-17 16:13
Re: The Into Africa Theory of Human Evolution 576 Bruce R. Fenton 12-Jun-17 09:26
Re: The Into Africa Theory of Human Evolution 607 Bruce R. Fenton 09-Jun-17 02:03
Re: The Into Africa Theory of Human Evolution 695 Thanos5150 09-Jun-17 23:54
OOA strikes back - the sequel 739 laughin 08-Jun-17 13:09
Re: OOA strikes back - the sequel 636 Bruce R. Fenton 08-Jun-17 15:37
Re: OOA strikes back - the sequel 640 Thanos5150 08-Jun-17 17:23
Re: The Into Africa Theory of Human Evolution 618 Robert Jameson 11-Jun-17 06:13
Re: The Into Africa Theory of Human Evolution 619 Bruce R. Fenton 11-Jun-17 11:46
Re: The Into Africa Theory of Human Evolution 774 Robert Jameson 12-Jun-17 05:34
Re: The Into Africa Theory of Human Evolution 631 dong 12-Jun-17 06:51
Re: The Into Africa Theory of Human Evolution 684 Robert Jameson 12-Jun-17 13:32
Re: The Into Africa Theory of Human Evolution 697 Bruce R. Fenton 12-Jun-17 09:19
Re: The Into Africa Theory of Human Evolution 599 Robert Jameson 12-Jun-17 12:40
Re: The Into Africa Theory of Human Evolution 668 Susan Doris 14-Jun-17 05:02
Re: The Into Africa Theory of Human Evolution 670 Robert Jameson 14-Jun-17 05:45
Re: The Into Africa Theory of Human Evolution 693 michael seabrook 13-Jun-17 22:09
Re: The Into Africa Theory of Human Evolution 696 Robert Jameson 13-Jun-17 00:51
Re: The Into Africa Theory of Human Evolution 599 SallyA 13-Jun-17 01:03
Re: The Into Africa Theory of Human Evolution 583 Robert Jameson 13-Jun-17 02:44
Re: The Into Africa Theory of Human Evolution. -- off topic .. senmutt tomb. .. Giza hosts an inland sea 760 SallyA 13-Jun-17 02:59
Re: The Into Africa Theory of Human Evolution. -- off topic .. senmutt tomb 564 Robert Jameson 13-Jun-17 03:39
Re: The Into Africa Theory of Human Evolution. -- off topic .. senmutt tomb 624 SallyA 13-Jun-17 04:04
Re: The Into Africa Theory of Human Evolution 680 Thanos5150 14-Jun-17 15:55
Re: The Into Africa Theory of Human Evolution 762 Robert Jameson 14-Jun-17 17:54
Re: The Into Africa Theory of Human Evolution 588 michael seabrook 16-Jun-17 21:03
Re: The Into Africa Theory of Human Evolution 605 Robert Jameson 16-Jun-17 22:47
Re: The Into Africa Theory of Human Evolution Excellent and ... 675 SallyA 16-Jun-17 23:39
Re: The Into Africa Theory of Human Evolution Excellent and ... 677 Robert Jameson 17-Jun-17 09:44
Re: The Into Africa Theory of Human Evolution 586 Susan Doris 17-Jun-17 14:17
Re: The Into Africa Theory of Human Evolution 648 Robert Jameson 18-Jun-17 02:43
Re: The Into Africa Theory of Human Evolution 597 Susan Doris 18-Jun-17 09:24
Re: The Into Africa Theory of Human Evolution 656 Bruce R. Fenton 18-Jun-17 11:04
Re: The Into Africa Theory of Human Evolution 651 Robert Jameson 18-Jun-17 11:14
Re: The Into Africa Theory of Human Evolution 566 Robert Jameson 18-Jun-17 11:04
Unfair diversion 491 drrayeye 18-Jun-17 21:35
Re: Proto-sumerian ... Ukraine ... a bit late for into Africa I fear, probably mis-posted 755 SallyA 19-Jun-17 03:00
Re: Unfair diversion 694 Susan Doris 19-Jun-17 05:20
Unfair diversion for sure 583 drrayeye 19-Jun-17 05:47
Re: Unfair diversion for sure 640 Susan Doris 20-Jun-17 04:56
Robert's challenge 667 drrayeye 20-Jun-17 07:24
Re: Robert's challenge 576 Robert Jameson 26-Jun-17 11:17
Tangential 572 drrayeye 27-Jun-17 05:03
Re: Tangential 582 Robert Jameson 27-Jun-17 06:12
Wrong board 599 drrayeye 27-Jun-17 06:38
Re: Wrong board 555 Robert Jameson 27-Jun-17 08:03
Re: Tangential 589 Eddie Larry 27-Jun-17 15:59
Re:Susan, do you know of a time line? 603 SallyA 19-Jun-17 17:48
Re: Unfair diversion 660 Thanos5150 19-Jun-17 13:44
Re: Unfair diversion 575 drrayeye 19-Jun-17 15:40
Re: Unfair diversion 685 Robert Jameson 19-Jun-17 23:14
Re: Unfair diversion 585 drrayeye 20-Jun-17 00:31
Re: Unfair diversion 652 Robert Jameson 20-Jun-17 10:19
kicking a dead horse 600 drrayeye 20-Jun-17 14:36
Re: kicking a dead horse 504 Robert Jameson 20-Jun-17 23:49
Staying on topic 584 drrayeye 21-Jun-17 01:15
Re: Unfair diversion 591 Thanos5150 20-Jun-17 15:24
Hominids vs Homo. most obvious difference -- thumbs on feet 520 SallyA 20-Jun-17 15:59
Re: Hominids vs Homo. most obvious difference -- thumbs on feet 492 Bruce R. Fenton 26-Jun-17 10:21
Interesting 570 drrayeye 27-Jun-17 06:50
Re: Interesting 459 Bruce R. Fenton 27-Jun-17 22:32
Re: Hominids vs Homo. most obvious difference -- thumbs on feet 466 Eddie Larry 28-Jun-17 04:37
Re: Hominids vs Homo. most obvious difference -- thumbs on feet 795 Bruce R. Fenton 28-Jun-17 04:41
Re: Unfair diversion 536 drrayeye 20-Jun-17 15:59
Off Topic: re: factors which alter .. Earth's shields don't block cygnets ... nor neutrinos, ... 511 SallyA 20-Jun-17 21:13
Re: Unfair diversion 489 SallyA 21-Jun-17 01:37
Focus 586 drrayeye 21-Jun-17 07:30
Re: Focus 651 Bruce R. Fenton 26-Jun-17 10:26
Re: Focus 564 Susan Doris 26-Jun-17 16:51
Re: Focus... ah, my bad ... 470 SallyA 11-Feb-18 19:40
Re: The Into Africa Theory of Human Evolution 653 Bruce R. Fenton 17-Jun-17 12:12
Re: The Into Africa Theory of Human Evolution 593 Robert Jameson 26-Jun-17 06:32
Re: The Into Africa Theory of Human Evolution 572 Bruce R. Fenton 26-Jun-17 11:57
Re: The Into Africa Theory of Human Evolution 717 Robert Jameson 26-Jun-17 13:59
Re: The Into Africa Theory of Human Evolution 406 lalbee 16-Feb-18 13:39
Re: The Into Africa Theory of Human Evolution 387 lalbee 17-Feb-18 02:25
Re: The Into Africa Theory of Human Evolution 405 Bruce R. Fenton 17-Feb-18 04:13
Re: The Into Africa Theory of Human Evolution 385 lalbee 17-Feb-18 05:56
Re: The Into Africa Theory of Human Evolution 407 Bruce R. Fenton 17-Feb-18 06:27
Re: The Into Africa Theory of Human Evolution 527 lalbee 18-Feb-18 15:17
Re: The Into Africa Theory of Human Evolution 411 drrayeye 21-Feb-18 13:48
Re: The Into Africa Theory of Human Evolution 397 lalbee 22-Feb-18 16:45
Re: The Into Africa Theory of Human Evolution 394 Robert Jameson 22-Feb-18 19:39
Re: The Into Africa Theory of Human Evolution 751 Bruce R. Fenton 22-Feb-18 23:07
Re: The Into Africa Theory of Human Evolution 403 Bruce R. Fenton 22-Feb-18 23:00


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