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Aït Moussa · Chtouka confederation

One family, two lines

One Amazigh (Berber) family from the Souss valley, as a worked example of how North Africa was made. Its Y-chromosome has been in Africa for more than 65,000 years; its mitochondrial line crossed from Iberia before anyone in Morocco had planted a crop. Here is how they met.

65,000+ Years African, father to son
~400 BCE Origin of branch E-PF2546
8–11k Years since H1 crossed from Iberia

Each figure is an estimate with a published range, given in full below.


Deep time, in order

Two ancestries, six moments. The father's line is the older by a very long way — but the mother's line has been North African for roughly ten thousand years, which is longer than any written history of the region.

  • Father's line — squares, left
  • Mother's line — circles, right
Deep-time sequence of the two ancestral lines A vertical timeline, oldest at the top. Paternal events on the left: haplogroup E arises in Africa more than 65,000 years ago; E-M81 expands across the Maghreb 2,000 to 3,000 years ago; E-PF2546 branches around 400 BCE. Maternal events on the right: H1 shelters in the Franco-Cantabrian refuge 26,500 to 19,000 years ago; H1 crosses into North Africa from Iberia 8,000 to 11,000 years ago; Iberian farmers reach the Maghreb around 7,500 years ago. Both lines converge on Aït Moussa in Souss-Massa today. Stops are ordered, not drawn to scale. Haplogroup E arises in Africa 65,000+ years ago H1 shelters in the Franco-Cantabrian refuge 26,500–19,000 years ago H1 crosses into North Africa from Iberia 8,000–11,000 years ago Iberian farmers reach the Maghreb ~7,500 years ago E-M81 expands fast across the Maghreb 2,000–3,000 years ago E-PF2546 branches in Mauretanian Iron Age ~400 BCE AÏT MOUSSA — TODAY both lines, one family
Stops are in order, not to scale. Compressing 65,000 years onto one axis at true scale would leave every event after the Ice Age stacked in the last few pixels. Each date is an estimate with a published range, shown in full above.

The father's line: E-PF2546

It never left

The paternal line belongs to haplogroup E, defined by the M96 mutation. Recent evidence — including the discovery of the ancient D0 haplogroup in Nigeria — supports an African origin for the whole DE clade, placing this line's root on the continent more than 65,000 years ago.

The Amazigh marker

Further down the tree sits E-M81, the dominant Y-chromosome across North Africa and the defining paternal marker of the Amazigh. It exceeds 80% in the Maghreb and approaches 98% in some Moroccan Amazigh groups, thinning eastward towards Egypt.

The surprise is how recent it is. Whole Y-chromosome sequencing revised E-M81's time to most recent common ancestor down to roughly 2,000–3,000 years ago, and its star-like variation points to a rapid expansion from a small founder group in the late Bronze or early Iron Age (Solé-Morata et al. 2017).

Within that, E-PF2546 split from its parent clade around 500 BCE and coalesces at approximately 400 BCE — the era of the independent Amazigh kingdoms of Mauretania, when Carthage held the coast and the hinterland governed itself. An ancient-DNA sample from a Guanche individual on Tenerife has been assigned to this same subclade in public ancient-DNA datasets, which would place it among the Amazigh who sailed to settle the Canary Islands.

E-PF2546 frequency by region Reported frequency of haplogroup E-PF2546: Mauritania 64 percent, Western Sahara 50 percent, Morocco 23 percent. Share of men carrying E-PF2546 Mauritania 64% Western Sahara 50% Morocco 23% 0% 100%
The branch is concentrated in the far west. Frequencies are highest in Mauritania and the Western Sahara and lower across Morocco as a whole — the distribution you would expect of a lineage that expanded from a western founder population. Figures via FamilyTreeDNA Discover; sample sizes vary by region, so treat them as indicative.

The mother's line: H1-T16189C!

Born in the Ice Age

Haplogroup H is the most common maternal lineage in Europe, carried by roughly 41% of the population. Its H1 branch is tied to the Franco-Cantabrian refuge, where people sheltered through the Last Glacial Maximum, 26,500–19,000 years ago, before repopulating the continent. H1 coalesces around 11,000 years ago.

It went south, too

That expansion was not only northward. A concurrent movement crossed the Strait of Gibraltar, carrying H1 from Iberia into North Africa, where it became the dominant subclade of H — 42% of all H lineages, highest in Morocco and thinning eastward (Ottoni et al. 2010).

The timing matters more than the origin. H1 coalesces in North Africa an estimated 8,000–11,000 years ago — the early Holocene, thousands of years before the Phoenicians, Romans, Vandals or Arabs. North-Africa-specific subclades such as H1v, H1w and H1x then evolved locally, in place, over millennia.

See also our summary of North African maternal diversity (Boumajdi et al. 2026).

So H1-T16189C! is not the trace of a recent European ancestor. It belongs to a lineage that has been North African for close to ten thousand years. The T16189C marker itself is a well-documented control-region polymorphism; it has been studied for possible metabolic associations, but its relevance here is purely genealogical.

The H1 enigma

Why the two lines don't match

An African father-line beside a European mother-line looks like a contradiction. It is not. It is a textbook case of asymmetrical admixture: two populations mixed, but men and women did not contribute equally.

Across the Maghreb the pattern is consistent — overwhelmingly local paternal lineages, alongside a substantial minority of Eurasian maternal ones. That is the signature of female-mediated gene flow into a patrilocal society: men tended to stay where they were born, so the male gene pool stayed put, while incoming women were absorbed into existing communities.

Stated plainly: the local men's line persisted, and it was the arriving women's lines that were added.

Five explanations. One survives.

Several documented migrations could in principle have carried European maternal lines into North Africa. Tested against the coalescence dates, only one fits.

The dates do the deciding. Any candidate has to be old enough to explain a lineage that coalesced 8,000–11,000 years ago and then evolved its own local subclades. Four of the five are far too recent.
Scenario When Verdict Why
Neolithic migration from Iberia ~7,500 years ago Fits Ancient DNA confirms Early European Farmers moved from Iberia into the Maghreb, and the movement was sex-biased. The dates line up with H1's coalescence.
Bell Beaker diffusion ~4,500 years ago Unlikely Its genetic legacy is a male-biased expansion of Y-DNA R1b — the wrong signature for introducing a major maternal lineage.
Roman-era movement ~2,000 years ago Too recent Far too late for H1's coalescence dates, and too small to seed a haplogroup at 10–20% of the maternal pool.
Vandal and Alan migration 5th century CE Negligible Roughly 80,000 people forming a temporary ruling elite over millions. Long-term genetic impact considered negligible.
Moorish expansion and Reconquista 8th–17th c. CE Wrong way The measured flow runs the other direction — North African lineages into Iberia. And it postdates H1 in the Maghreb by thousands of years.

The consensus, supported by both genetics and archaeology, is the first: H1 entered the North African maternal gene pool through female-mediated migration from Iberia in the Neolithic (Fregel et al. 2018), a picture the 2023 ancient-DNA follow-up reinforces. Not a conquest — a slow mixing, in which farming women joined communities already there.

What this does not show

These are two lines out of more than a thousand ancestral lines converging on any one person. A Y-chromosome and a mitochondrion each trace a single unbroken thread and are silent about everyone else.

A haplogroup is not an ethnicity, not a nationality, and not a percentage of anything. The date ranges here are wide because the evidence is genuinely uncertain. The limitations page sets out the boundaries in full.


Sources

All fifteen papers summarised on this site are listed on the research page. Tribal and ethnographic detail about the Aït Moussa comes from regional ethnography rather than genetics, and is flagged as such on the culture page.

Last updated: 16 September 2026