Fig. 7.

—Shared ancestral genetic variation between allopatric populations and admixture events between sympatric species pairs. The least introgressed normal whitefish population from Cliff Lake was used to root the tree. Horizontal branch lengths are proportional to the amount of genetic drift in each branch, and the scale bar indicates 10 times the average standard error (SE) of the entries in the covariance matrix between pairs of populations. Color scale indicates the weight of inferred migration events.