Shum Laka paper

[EDsomali]

https://reich.hms.harvard.edu/sites...inline-files/Shum_Laka_published_online_0.pdf

Came early.

 

[EDsomali]

I've read the paper a few times now and ngl all of the stuff is things we already knew.

Though mota deriving ancestry from a ghost branch rather than a south African source is good to see on a peer reviewed paper. They also had weird modelling of nilotic populations but now we wait for Buur Heybe.

 

[land owner]

Very interesting sxb but I just want my buur warqad

 

[Arabsiyawi]

I've read the paper a few times now and ngl all of the stuff is things we already knew.

Though mota deriving ancestry from a ghost branch rather than a south African source is good to see on a peer reviewed paper. They also had weird modelling of nilotic populations but now we wait for Buur Heybe.

Any chance Buur Heybe’s peoples were heavily Mota-related ?

 

[Apollo]

About this paper, it basically proves that A00 (super ancient 250,000 year old male lineage) is from this extinct group.

Any chance Buur Heybe’s peoples were heavily Mota-related ?

They are almost certainly related due to geography, just to which extent is the question. For all we know it could be over a +20,000 year split.

 

[EDsomali]

Look at the models they have for Agaw and Mursi. A super deep split is probably them trying to make up for some Basal human ancestry present in Proto-Nilotic peoples.

 

[Apollo]

View attachment 90952

View attachment 90953
Look at the models they have for Agaw and Mursi. A super deep split is probably them trying to make up for some Basal human ancestry present in Proto-Nilotic peoples.

Wtf, so the Mbuti are not pure either? Looks like no pure pygmy exist (maybe ''phenotypically'', but not genetically).

Always was suspect on the Mbuti as they speak a Nilo-Saharan language.

 

[land owner]

A super deep split is probably them trying to make up for some Basal human ancestry present in Proto-Nilotic peoples.

Can you expound more on this basal human ancestry?

 

[EDsomali]

Can you expound more on this basal human ancestry?

Something split off early and may have contributed to Nilotic people. Kinda clueless myself right now though.

"Admixture graph with Mursi in place of Agaw (930k SNPs covered). We locked the non-African-related dummy admixture into Shum Laka at 1.1% to match the value from our primary model. Branch lengths (in units of squared allele frequency divergence) are rounded to the nearest integer. All f-statistics relating the populations are predicted to within 3.2 standard errors of their observed values (2.3 excluding two statistics involving Neanderthal and chimpanzee). Mursi is modelled as admixed with 24% Mota-related ancestry. The deep modern human admixture source is inferred to split (slightly) before the Central African hunter-gatherer lineage."

This is what they had to say about Nilotic ancestry in Mursi.

 

[land owner]

Something split off early and may have contributed to Nilotic people. Kinda clueless myself right now though.

"Admixture graph with Mursi in place of Agaw (930k SNPs covered). We locked the non-African-related dummy admixture into Shum Laka at 1.1% to match the value from our primary model. Branch lengths (in units of squared allele frequency divergence) are rounded to the nearest integer. All f-statistics relating the populations are predicted to within 3.2 standard errors of their observed values (2.3 excluding two statistics involving Neanderthal and chimpanzee). Mursi is modelled as admixed with 24% Mota-related ancestry. The deep modern human admixture source is inferred to split (slightly) before the Central African hunter-gatherer lineage."

This is what they had to say about Nilotic ancestry in Mursi.

Doesn’t the mursi have recent omotics input though?

 

[EDsomali]

Doesn’t the mursi have recent omotics input though?

24% Mota related Ancestry. It shows on the graph.

 

[land owner]

The deep modern human admixture source is inferred to split (slightly) before the Central African hunter-gatherer lineage."

Do you believe that the deep human ancestry could’ve been MWI_Fingira_2500BP related?

 

[EDsomali]

Do you believe that the deep human ancestry could’ve been MWI_Fingira_2500BP related?

No.

It's something modern + Basal which is messing up the branching.

Ancient East Africa + Atherian is what I'm thinking right now.

 

[blackflashist]

It's not really a super deep split. Look at the branch lengths for the lines that lead to Mota+Eurasians, West-Africans+North Africans, and one leading to Nilotes + Cushitic. All of these are believed to have split from one another between 80,000-60,000 years ago according to the paper. Nilotes like the Mursi probably have some unmodeled West African admixture. However in graphs you posted, if you take away the ~3.8% Ghost-Modern ancestry the Agaw get from Mota-related admixture, they no deep ancestry at all, same with Taforalt.