Article: article from journal or magazin.
'Haldane's Sieve' in a metapopulation: sifting through plant reproductive polymorphisms.
Trends in Ecology and Evolution
An important result of population genetics is that advantageous mutations will be fixed by selection in a population with a greater probability if they are dominant rather than recessive. This selective filter on new variants entering a population, termed 'Haldane's Sieve', has hitherto been invoked to account for the greater role of dominant than completely recessive mutations in adaptive evolution. Here, we suggest that a process similar to Haldane's Sieve will act on migrants into subpopulations of a metapopulation, and that the repeated action of Haldane's Sieve on alleles maintained by frequency-dependent selection, such as those responsible for many plant reproductive polymorphisms, is expected to bias their frequency distribution in favour of dominant alleles. The genetic and phenotypic signatures left by these processes might provide additional indirect support for the contentious idea that metapopulation dynamics have had an important role in shaping the ecology and evolution of some plant species.
Web of science
Last modification date