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Phylogenetic comparative methods: applying modern probabilistic methods to evolutionary biology
| Content Provider | Semantic Scholar |
|---|---|
| Author | Bartoszek, Krzysztof |
| Copyright Year | 2015 |
| Abstract | Since Darwin biologists have recognized the need for a specialized mathematical apparatus to study inter–species measurements. However it was only Felsenstein [1985]’s independent contrasts method [although similar models were discussed earlier, e.g. Edwards, 1970] that proposed an appropriate framework for correctly analyzing trait data obtained from different taxonomic units. What makes such data different from the usual independent, identically distributed sample setting is that species level measurements are not independent. Due to a shared evolutionary history one can easily observe that more recently diverged species tend to be similar. Therefore using standard statistical methodologies, will make it impossible to distinguish between similarities due to shared environment or trait function (selection and adaptation) and phylogenetic inertia. To remedy this situation Felsenstein [1985] assumed that a trait evolves as a Brownian motion on top of a phylogenetic tree. Along a branch we have usual Brownian motion evolution until a speciation point is reached. After |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://www.czm.mif.pg.gda.pl/wp-content/uploads/konferencja/mtzmd15/abs/Bartoszek.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
