Figure 4.

ROLLOFF Plots

Three populations from each of the four historical periods of admixture (A: <500 BCE, B: ∼0 CE, C: ∼1000 CE, and D: >1500 CE) are plotted to show their LD decay (represented by a weighted correlation coefficient as previously described³⁹) with genetic distance. The legend reports the name of each population, with the estimated date of admixture in brackets. Notably, all three Nilotic populations (Gumuz, South Sudanese, and Anuak) have very flat decay curves compared to those of the other populations in the same plot.