Fig. 2: Two hypothetical scenarios considered in the theory.
From: The wave of gene advance under diverse systems of mating
a Uniform density where the advantageous allele in the initial population spreads along one-dimensional space; b the initial population colonizes new space and adaptive genes spread accompanying the colonization process. In (a), black solid line represents uniform density distribution in space. Black dashed and solid lines represent population density at earlier and later times in (b), respectively; while red dashed and solid lines represent frequencies of adaptive genes at earlier and later times in (a) and (b), respectively.
