Table 1. Overview of predictors of the evolution of sex.

Predictor	Brief description	Sex evolves if
ΔVarHD	Difference in variance of Hamming distance to the consensus sequence after full and before recombination	ΔVarHD>0
ΔVaradd	Difference in additive genetic variance after full and before recombination	ΔVaradd>0
ΔMeanfit	Difference in mean fitness after full and before recombination	ΔMeanfit>0
Ephys	Physiological epistasis characterizing fitness landscape	Ephys<0
Epop	Population epistasis characterizing epistatic interactions observed in population	Epop<0
EMP	Mean pairwise epistasis (from [28])	EMP<0
EWP	Weighted mean pairwise epistasis (from [28])	EWP<0