Fig. 3.

Spatial frequency distribution of haplogroup L1c in Africa. The interpolation map was constructed by using the frequencies of L1c, as observed in our dataset, and those retrieved from all published data on the African continent (SI Tables 4 and 5) excluding PHG populations (therefore corresponding to the distribution of L1c among AGR populations). The map of the frequency of L1c in PHG populations and the geographic location of these populations are presented in the projected portion of CA, as presented in the lower lefthand corner of the figure. The PHG interpolation map is shown separately because of the unique demographic nature of these populations.