Genetic divergence
There was no structure across the principal coordinates (Figure 3); in
fact all four of them explained a similar percentage of variation
(Figure 3, inset), indicating near-orthogonality (i.e. independence) of
the original axes of variation. Yet, there were two notable outliers
shared between datasets reflecting adaptation to
high-CO2 environments (red identified points on Figure
3). Only one of these genes was annotated, as.