Fig 8. Weighted LD surface for Colombian samples with Yoruba as the first source population reference.

The two-pulse model that fits best is two pulses of non-Yoruba admixture at T₁ + T₂ = 14.5 ± 0.74 and T₂ = 3.7 ± 0.62 generations ago. The amplitude of this weighted LD surface is approximately ten times larger than that of the Mexican samples. This is a result of larger proportion of Yoruba ancestry in the Colombian samples. The weighted LD surface was estimated from real data, the level lines correspond to the best-fitting model inferred by LaNeta method.