Editing Evolvability (section)

==Enhancement of selection==
Rather than creating more phenotypic variation, some mechanisms increase the intensity and effectiveness with which selection acts on existing phenotypic variation.<ref name="Olson-Manning et al. 2012" /> For example:

* Mating rituals that allow [[sexual selection]] on "good genes", and so intensify [[natural selection]].<ref name="Olson-Manning et al. 2012" />
* Large [[effective population size]] increasing the threshold value of the [[selection coefficient]] above which selection becomes an important player. This could happen through an increase in the census population size, decreasing [[genetic drift]], through an increase in the recombination rate, decreasing [[genetic draft]], or through changes in the probability distribution of the numbers of offspring.<ref name="Olson-Manning et al. 2012" />
* Recombination decreasing the importance of the [[Hill-Robertson effect]], where different genotypes contain different adaptive mutations. Recombination brings the two alleles together, creating a super-genotype in place of two competing lineages.<ref name="Olson-Manning et al. 2012" />
* Shorter [[generation time]].<ref name="Olson-Manning et al. 2012" />