Location and of the studied populations.

<p>(A) Geographic locations of the two mountains (the main study sites) and the four low-altitude reference populations. Altitude is indicated by the numbers in the population names. See <a href="http://www.plosgenetics.org/article/info:doi/10.1371/journal.pgen.1005361#pgen.1005361.s005" target="_blank">S1 Table</a> for coordinates. (B) Locations of the four altitude-specific populations on each mountain.