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mtDNA · Maternal lineage

L1C3B1

mtDNA Haplogroup L1C3B1

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A reference profile for one lineage branch. Shared haplogroups do not establish a family relationship or cultural identity.

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Branch background

Historical context for mtDNA lineage branch L1C3B1

Origins and Evolution

L1C3B1 is a Holocene subclade of the broader L1C3 maternal lineage, which itself is an ancient African mtDNA branch. The parent clade L1C3B is dated to roughly ~10 kya in Central/West-Central Africa; L1C3B1 represents a later diversification within that regional context, plausibly arising around the early to mid-Holocene (~6 kya). Its emergence likely reflects local demographic processes in rainforest and forest–savanna ecotone populations, including small-scale population structure, founder effects, and localized maternal continuity among hunter-gatherer groups.

Subclades

At present, sampling across Central African populations is still incomplete compared with some other regions, so the internal structure of L1C3B1 remains only partially resolved. Available data indicate L1C3B1 branches into a few localized lineages found primarily among Pygmy groups and nearby Bantu-speaking communities. Future dense sequencing in Central African foragers and neighboring populations may reveal further substructure and refine coalescence time estimates.

Geographical Distribution

L1C3B1 shows a clear concentration in Central and West-Central Africa, with highest frequencies in rainforest hunter-gatherer (Pygmy) groups such as the Mbuti, Aka and Baka. Lower to moderate frequencies occur in adjacent Bantu-speaking populations (Cameroon, Gabon, Republic of the Congo, DR Congo) and among some West African groups (e.g., Yoruba) reflecting historic gene flow and admixture. Due to the transatlantic slave trade, the lineage is also detectable at low to moderate frequencies in African-descended populations in the Americas (African American, Afro-Caribbean). Occasional detections in East African, North African and Middle Eastern samples are best interpreted as results of more recent regional admixture rather than primary centers of origin.

Historical and Cultural Significance

The distribution of L1C3B1 aligns strongly with long-term maternal continuity in Central African rainforest populations. Its association with Pygmy groups supports genetic evidence for deep local lineages preserved by small, relatively isolated forager communities. The presence of L1C3B1 in Bantu-speaking populations illustrates the bidirectional nature of contact during the Bantu expansion: while incoming farming groups introduced new lineages, they also acquired maternal lineages from resident forager populations. In the African diaspora, the lineage provides a link to specific Central and West-Central African source regions for maternal ancestry.

Conclusion

L1C3B1 is a regionally informative Holocene maternal lineage centered on Central/West-Central Africa, especially associated with rainforest hunter-gatherers. It is useful for reconstructing local demographic histories, hunter-gatherer continuity, and interactions between forager and farming populations in Central Africa, as well as tracing African maternal ancestry in the diaspora. Continued sampling and full mitogenome sequencing in underrepresented Central African populations will improve resolution of its phylogeny and demographic story.

Key Points

  • Origins and Evolution
  • Subclades
  • Geographical Distribution
  • Historical and Cultural Significance
  • Conclusion
Reference profile

Tree & Relationships

Phylogenetic context and subclades

Evolution Path

Follow the recorded parent branches toward L1C3B1. Dates are estimates and can change as reference data is revised.

Steps Haplogroup Age Estimate Archaeology Era Time Passed Immediate Descendants Tested Modern Descendants Ancient Connections
1 L1C3B1 Current ~6,000 years ago Chalcolithic 6,000 years 1 20 0
2 L1C3B ~8,000 years ago Neolithic 8,000 years 1 21 0
3 L1C3B'C - - - 1 22 0
4 L1C3 ~25,000 years ago Paleolithic 25,000 years 2 103 0
5 L1c ~80,000 years ago Paleolithic 80,000 years 2 183 0
6 L1 ~150,000 years ago Paleolithic 150,000 years 3 503 4
7 L1'2'3'4'5'6'7 - - - 2 31,852 0
8 L ~160,000 years ago Paleolithic 160,000 years 2 32,236 5

Subclades (1)

L1C3B1A
~4,000 years ago 1
Central / West-Central Africa
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Where in the World

Geographic distribution and modern presence

Recorded origin

Central / West-Central Africa

Modern Distribution

The populations where mtDNA haplogroup L1C3B1 is found include:

  1. Mbuti (Central African Pygmies)
  2. Aka and Baka (Central African Pygmy groups)
  3. Bantu-speaking populations in Cameroon, Gabon, Republic of the Congo and DR Congo
  4. Bakongo and Fang (Central/West-Central African groups)
  5. Yoruba and other West African populations (lower/moderate frequencies)
  6. African-descended populations in the Americas (African American, Afro-Caribbean)
  7. Occasional detections in East African groups (e.g., parts of the Great Lakes/Horn region)
  8. Low-frequency presence in North African and Middle Eastern samples due to historical admixture
Historical context

A branch through time

Estimated formation in a broad historical timeline. Period markers provide context and do not imply a connection with particular cultures.

  1. ~10k years ago

    Neolithic Revolution

    Agriculture begins, settled communities form

  2. ~6k years ago

    Haplogroup L1C3B1

    Estimated formation of this mtDNA branch; dates and locations are reference estimates.

    This branch
  3. ~5k years ago

    Bronze Age

    Metalworking, writing, and early civilizations

  4. ~3k years ago

    Iron Age

    Iron tools, expanded trade networks

  5. ~2.5k years ago

    Classical Antiquity

    Greek and Roman civilizations flourish

  6. Present

    Present Day

    Modern era

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Archaeological context

Recorded archaeological associations for mtDNA branch L1C3B1

Recorded associations

These labels describe archaeological contexts recorded for reference samples linked to L1C3B1. An association does not establish that all carriers belonged to a culture or followed a particular migration route.

Bungule Corded Ware Jordanow-Michelsberg Culture Kindoki Makwasinyi Mtwapa Ngongo Mbata Slab Grave Culture St. Helena Colonial Unetice Culture
Culture assignments are based on archaeological context of ancient DNA samples and may represent regional associations during specific time periods.
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Sample Catalog

1 subclade carrier of haplogroup L1C3B1 (no direct carriers in the current reference selection)

1 shown · 1 matching samples

Portraits are AI-generated illustrations. Sample labels and accession IDs identify the reference records.

Portrait Sample Country Era Date Culture mtDNA Match
AI-generated illustrative portrait of Swahili individual, Makwasinyi (Taita-Taveta), Kenya (1,650-1,950 CE)
Sample ID: I17402
Kenya Makwasinyi (Kenya) 1650-1950 CE Makwasinyi L1c3b1a Subclade
MATERNAL LINEAGE · ANCIENT DNA

Ancient lineage evidence map

Follow parent clades toward this branch and explore where ancient carriers were found.

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Markers are archaeological find locations. A dashed connector is an uncertain, proposed geographic transition between consecutive branches supported by multiple dated observations; it is not an exact travel route, birthplace or proof of direct descent. Parent-clade samples may belong to other descendant branches. Gaps remain where evidence is insufficient. Sample dates differ from haplogroup formation dates.

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Carrier Distribution Map

Geographic distribution of 1 ancient DNA sample (direct and subclade carriers of L1C3B1)

Subclade carrier
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Temporal Distribution

Distribution of carriers across archaeological periods

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Geographic Distribution

Counts by recorded sample country. These reflect the available reference selection, not population frequencies.

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Country × Era Distribution

Compare recorded sample counts across countries and archaeological periods. Select a populated cell to inspect a sample.

Data

Data & Provenance

Source information and data quality

Last Updated 2026-02-16
Confidence Score 50/100
Coverage Low

Data Source

Classification, estimated dates and geographic context reflect the recorded reference data and may change as evidence is revised. Sample coverage is uneven; recorded locations and archaeological associations do not establish personal origin or cultural identity.