BIOLOGY 1M03 Lecture Notes - Lecture 10: Adaptive Radiation, Phenetics, Chapter 27
18 Feb 2015
School
Department
Course
Professor
Document Summary
Lecture 10/11/12/13 - chapter 27: phylogenies and the. There are four strategies for using data to estimate trees: (phenetic (distance), The phenetic approach is based on computing a statistic that summarizes the. A computer program then compares the statistics for different population and. A distance matrix is symmetrical around the diagonal. A maximum parsimony (cladistic) approach attempts to minimize the number of. Data -> consider trait evolution on many phylogenies -> select the phylogeny with. Is an assumption that is the most likely explanation or pattern is the one that. This approach focuses on synapomorphies, the shared derived characteristics. When species have this shared new group, this group is likely to be monophyletic. There is a possibility that this is wrong. This could be another possibility but it is complicated to scratch it. Always choose the trees that have the least number of changes.
