Figure 6

Population structure analysis based on the concatenated data set of cave individuals (AH and HP) and all blind or intermediate individuals collected from Ghubrat Tanuf or Wadi Falahi. The figure (K = 2) represents the two most probable clusters (magenta = Al Hoota and blind/intermediate individuals mostly from Wadi Falahi, light pink = Hoti Pit and blind/intermediate individuals mostly from Ghubrat Tanuf) resulting from the structure analysis. The corresponding phenotypes of the individuals are indicated by the bar below: black = blind, grey = intermediate.