DNA: Determinedly Nothing but out of Africa

DNA theories Out of Africa alternativeMore DNA research reveals the incredible variation in human population and more mystery surrounding those pesky Basal Eurasians.

Analysis of DNA from some of the world's first farmers shows that they had surprisingly diverse origins ... The switch from mobile hunting and gathering to the sedentary lifestyle of farming first occurred about 10,000 years ago in south-western Asia. After the last Ice Age, this new way of life spread rapidly across Eurasia, in one of the most important behavioural transitions in human history.

... Despite the fact that both these groups inhabited the Fertile Crescent - a sickle-shaped zone stretching from the Nile Valley in the west to western Iran - they appear to have separated genetically between 46,000 and 77,000 years ago. "Probably the biggest surprise news about this study is just how genetically different the eastern and western Fertile Crescent early farmers were,"

The present-day population whose genomes most closely resemble those of the western farmers is found not in the Middle East, but on the Italian island of Sardinia.
First farmers had diverse origins, DNA shows | BBC

DNA theories Basal Eurasians The only way to fit the latest and future theories into the DNA dogma, population migration dogma and hunter gather to farmer dogma, is to come up with crazier DNA stories.

We sequenced Early Neolithic genomes from the Zagros region of Iran (eastern Fertile Crescent), where some of the earliest evidence for farming is found, and identify a previously uncharacterized population that is neither ancestral to the first European farmers nor has contributed significantly to the ancestry of modern Europeans. These people are estimated to have separated from Early Neolithic farmers in Anatolia some 46-77,000 years ago and show affinities to modern day Pakistani and Afghan populations, but particularly to Iranian Zoroastrians. We conclude that multiple, genetically differentiated hunter-gatherer populations adopted farming in SW-Asia, that components of pre-Neolithic population structure were preserved as farming spread into neighboring regions, and that the Zagros region was the cradle of eastward expansion.
Early Neolithic genomes from the eastern Fertile Crescent

With such amazing variations in populations genomes could the human DNA be rapidly and vastly changed by electromagnetic environmental factors and catastrophes? The L3

Holocene Filter - Catastrophe Evolution or Survival

dna Holocene Filter Marta Mirazón Lahr 4What is interesting is a proposal, the Holocene Filter, that involves catastrophism effecting and wiping out many localised human population, leaving those who have survived to spread their genes. Which sounds more like the catastrophe world that ancient plasma mythology suggests.

Mark Thomas believes the findings dovetail with an idea put forward by the Cambridge University researcher Marta Mirazón Lahr known as the Holocene Filter. This is the process by which hunting groups which were highly distinct from each other (often over relatively short geographic distances) were reshaped by extinction and migration in the last 10,000 years.

As a consequence human diversity was lost due to the differential expansion of a few populations.
First farmers had diverse origins, DNA shows | BBC

And we would have gotten away with it too, if it weren't for you meddling Basal Eurasians kids

Basal Eurasians migration dna mystery puzzle

Interestingly, what the early farmer populations do share is ancestry from an enigmatic group of humans known as Basal Eurasians. After humans left Africa, this population split away from other non-Africans and somehow interbred less with Neanderthals. But it's unclear where exactly these ancient people resided until they mixed with the ancestors of the farmers.

"Maybe they were hiding somewhere in North Africa, maybe they were hiding in the Middle East - somewhere with fewer Neanderthals. We just don't know," said Prof Thomas.

Basal Eurasians are often referred to as a "ghost population", as they are only inferred from genetic data through their ancestral contribution to other human groups like the first Middle Eastern farmers - and by extension modern human groups from India to western Europe.
First farmers had diverse origins, DNA shows | BBC

And we would have gotten away with it too, if it weren't for you meddling L3 kids

L3 evolution out of Africa migration
If humans evolved and all are from and out of Africa then what about the L3 mystery? Could humans outside of Africa have had their DNA changed?

Some scientists think that only a few people left Africa in a single migration that went on to populate the rest of the world, based in the fact that only descendents of L3 are found outside Africa.

It has been estimated that from a population of 2,000 to 5,000 individuals in Africa, only a small group, possibly as few as 150 to 1,000 people, crossed the Red Sea. Of all the lineages present in Africa only the female descendants of one lineage, mtDNA haplogroup L3, are found outside Africa. If there had been several migrations, one would expect descendants of more than one lineage to be found outside Africa.

A possible explanation is that these mutations occurred in East Africa shortly before the exodus and became the dominant haplogroups after the exodus from Africa through the founder effect. Alternatively, the mutations may have arisen shortly after the exodus from Africa.
Movement out of Africa - Recent African origin of modern humans | Wikipedia