I want to date some clades found from a phylogenetic analysis of a complex species. The calibration point is on the stem, between my complex species and a sister genera. After using some sister genera and a fossil register to construct a dating tree... I have de uncertainty... if Should I necessarily include several sister species of my complex species in the analysis? O if including more sequences to my crown group could let me get some noise in the resulting tree?
Dear Angelica Batista Morales,
Two researchers in the beginning of the the 20th century were interested in forms and features of plants: the Scottish researcher d'Arcy Thompson and the director/founder of the present Botanical Garden of Delft University of Technology, prof.dr.ir. G. van Itterson jr, whose PhD was devoted to the mathematics of phylogenesis. A ready and public friendly introduction to the latter approach and perhaps a starting point for your study is indicated by the attached link (cf. Chapter 5). The book can be purchased directly from the publisher.
http://delftacademicpress.nl/bij/d019extract.pdf
Thanks, Van Mourik. Later, I found that I need include at least one sister species in the ingroup (crown), at least one sister genera as steam and just one outgroup.
- Badges
- Science method
- Similar topics
- Biological Science
- Evolutionary Biology
- Phylogenetics
- Phylogenetic Analysis