Risultati di ricerca
2 giorni fa · Together with J. B. S. Haldane and Sewall Wright, Fisher is known as one of the three principal founders of population genetics. He outlined Fisher's principle, the Fisherian runaway and sexy son hypothesis theories of sexual selection.
- Ruth Eileen Guinness (1917)
5 giorni fa · The population geneticist Sewall Wright focused on combinations of genes that interacted as complexes, and the effects of inbreeding on small relatively isolated populations, which could be subject to genetic drift.
2 mag 2024 · This Perspective article offers a meditation on FST and other quantities developed by Sewall Wright to describe population structure, defined as any departure from reproduction through random union of gametes. Concepts related to the F -statistics draw from studies of the partitioning of variation, identity coefficients, and ...
Fst is a special case of F-statistics, the concept developed in the 1920s by Sewall Wright. Fst is simply the correlation of randomly chosen alleles within the same sub-population relative to that found in the entire population. It is often expressed as the proportion of genetic diversity due to allele frequency differences among populations.
4 giorni fa · The Island rule (or “Island effect” or “Foster’s rule”—Foster, 1964) is an eco-geographical rule in evolutionary biology that states that members of a species decrease or increase depending on the resources available in the environment. In its statement, we see that there are common points with Bergmann’s rule.
30 apr 2024 · The classical approach was first proposed by Sewall Wright in 1922 and makes use of pedigrees (called hereafter F PED) . With the advances in sequencing technologies, genomic-based inbreeding coefficients (hereafter called F genomic) have been developed.
26 apr 2024 · Within evolutionary biology, this type of parallel experimentation scheme was developed in Sewall Wright’s “shifting balance theory” of evolution. It addressed the rather neglected topic of how a population on a low fitness peak might eventually be able to go “downhill” against selective pressures, traverse a valley of low fitness ...
