BISC 1112 Lecture 4: Lecture 4
15 Feb 2017
School
Department
Course
Professor
Document Summary
Evolutionary history of a species or group of related species. Each branch point represents divergence of 2 species. An unresolved pattern of divergence more than 2. One off on its own usually illustrated at the bottom of the tree. Pheno and gene similar due to shared ancestry. Groups of species that includes ancestral species and all descendents. Does not include one of the groups. Is a character that originated in an ancestor of the taxon. An evolutionary novelty unique to a particular clade. Species or group of species that closely related to the ingroup. Compare them to differentiate derived and shared characteristics. Phylo can be used to predict characteristics of ancestors. Comparing nucleic acids and other molecules to infer relatedness. Dna codes for rrna changes relatively slowly useful for investigating branching points millions of years ago. Finds the simplest tree that best explains the data. Avoid many evolutionary events example: 1/c within the tree.
