Dominican vs Afro-Haitian: one island, markedly different ancestry balances.

The Dominican reference combines 33.5% Senegambian, 31.4% Anatolian Neolithic Farmer and 16.8% Western Steppe Herder in the Core ancestral model. Its smaller components are 6.3% Amerindian, 5.9% Western Hunter-Gatherer, 4.7% African Hunter-Gatherer and 1.4% Iberomaurusian.

The Afro-Haitian reference has 47.6% Senegambian, 34.5% West African and 7.3% African Hunter-Gatherer. The remainder is 6.0% Anatolian Neolithic Farmer, 2.6% Western Steppe Herder and 2.0% Western Hunter-Gatherer.

The contrast goes beyond the top three components. The model's sub-Saharan African-related categories total 38.2% for Dominican and 89.4% for Afro-Haitian. The farmer, Steppe and western hunter-gatherer components associated with European ancestry total 54.1% and 10.6%, respectively. Dominican also retains a 6.3% Indigenous American-related component; none is assigned to Afro-Haitian in this fit.

Dominican's nearest non-self match overall is Cuban Mestizo (Highly SSA-Mixed), at 3.353. Next come Ramapough Lenape (European+SSA-Mixed), at 4.590, and Hassanamisco Nipmuc (European+SSA-Mixed), at 4.597—all Close. The first two are also the selected distinct-country matches. Similarity to these particular mixed-ancestry references does not establish direct descent from those communities.

Afro-Haitian is closest to Afro-Grenadian at 2.713 and Afro-Brazilian at 2.782, the two selected national matches. Afro-Barbadian at 3.541 and Afro-Jamaican at 4.894 are also Close.

The Dominican–Afro-Haitian distance is 37.575, classified as Distant. Sharing Hispaniola does not make these reference averages interchangeable. These are model-based population estimates and deep ancestry affinities; individuals vary, and the labels are not literal recent genealogical percentages.

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