Figure 2
From: Variation in mate preference across a house mouse hybrid zone

Shift in position and width of the preference cline depending on its genetic basis (a: additive allelic effects; b: dominance; c: mild epistasis; d: strong epistasis; see text for details). The shift in the position is given scaled to the width of the underlying allelic clines (that is, if the underlying allelic clines are 10 km wide, a scaled shift=0.5 means that the centre of the preference cline is shifted 5 km towards musculus). The width of the preference cline is also expressed as a fraction of the width of the underlying allelic clines (that is, if the underlying allelic clines are 10 km wide, a scaled width=0.5 means that the width of the preference cline is 5 km).