Mar 3, 2007
Teaching slide: stable and unstable evolutionary equilibria (heterozygote advantage & disadvantage). In diploid organisms, when the fitness of individuals carrying two different versions of the same gene (heterozygotes) isn't intermediate between those carrying two copies of each of the two versions (homozygotes), there is an equilibrium point at which both versions will be present. This equilibrium point is stable if the heterozygote is the fittest genotype, but unstable if it's the least fit. This animation provides an explanation. Produced in Mathematica, Adobe Illustrator, and Keynote.
