Recent and/or ongoing selection regimes, as well as balancing selection, can be tested using population genetic approaches based on allele frequencies [ 45].
The front-and-center booth of Edwynn Houk has a nicely balanced selection that includes Alfred Stieglitz, Edward Steichen, Paul Strand and Man Ray, as well as some more recent work by Stephen Shore and Bruce Davidson.
Therefore neutrality tests based on the departures of allele frequency distribution from neutral expectations, such as the Ewens-Watterson test, may not be well suited to infer balancing selection on MHC genes.
We propose that one possible mechanism that has driven the evolution of these SNPs is diversifying selection in response to local pathogens; however, neutral evolution of these polymorphisms at large spatial scales, as well as effects of balancing selection at fine spatial scales, cannot be ruled out at this stage.
This pattern is consistent with balancing selection, as well as relaxed selective constraint on the R-genes.
You would not usually describe this Arsenal side as well balanced but, against City, Wenger got his team selection, formation and tactics absolutely spot on.
This workflow has been routinely used in our laboratory for the selection of libraries in multiple projects and consistently selects libraries which are well balanced across multiple parameters.
Preliminary analysis of molecular variation in the aflatoxin gene cluster of A. parasiticus [ 40] provides evidence for cluster reorganization from an ST ancestor, as well as evidence for recombination, balancing selection and chemotype-specific adaptation.
Among the limited selection of more substantial dishes, patatas riojanas, a traditional northern stew, is well balanced, with onions, spicy chorizo, and pimentón, a peppery Spanish spice like paprika, but it's ultimately a straightforward meat-and-potatoes dish.
The selection of people to sit on such committees is well understood, and they are well balanced, not only on party terms, but in their interests.
