Fig. 2: The paired species contrast (PSC) design.
From: Evolutionary sparse learning reveals the shared genetic basis of convergent traits
a An example phylogeny with one set of selected species (solid blue and red lines). Extraneous lineages (black dotted lines) and shared evolutionary history (gray dotted lines). b A schematic depiction of the four species selected for ESL-PSC analysis. In ESL, the response variable refers to the binary trait, where +1 represents the convergent trait, and −1 represents the ancestral trait.
