Table 1 Numbers of DEGs that are PO or GN in adaptations of guppies from high- to low-predation streams and the potential reverse adaptations.

Independent evolution occurred in a natural population (natural) and two human-introduced populations (Intro1 and Intro2).

Intro1Intro2Natural
Forward
adaptation
Reverse
adaptation
Forward
adaptation
Reverse
adaptation
Forward
adaptation
Reverse
adaptation
PO04130131
GN20161714554524
PO/GN*0.000.250.0590.210.000.25
P0.0140.259.9 × 10−40

*The number of genes that are PO divided by the number of genes that are GN.

G test of independence of the numbers of PO and GN genes in forward and reverse adaptations.