Correlation between male and homozygous female fitness. Male and female relative fitness were not correlated in the C lines (black circles, solid regression line) and were significant correlated in the MA lines (white circles, dashed regression line), indicating that new mutations were concordant in the direction of selection. Fitness values were calculated relative to mean control fitness.
Mallet et al. BMC Evolutionary Biology 2011 11:156 doi:10.1186/1471-2148-11-156