CAS AN 102 Lecture : AN102 2-10-14.docx

• School: Boston University
• Department: Anthropology
• Course: CAS AN 102
• Professor: Kevin Langergraber

Document Summary

Phylogeny evolutionary relationships among organisms: provides basis for identifying and classifying organisms taxonomy, explain why species evolve specific adaptations provide information about ancestral states, convergent evolution traits that are similar evolved separately for adaptation purposes but is not connected to a common ancestor passing it down, analogous characters similarity due to convergent evolution, homologous character similarity due to a common descent, ancestral characters homologous characters that appear early in the evolution lineage, present in last common ancestor, derived character homologous traits that appear later in the evolution of a lineage, evolved since last common ancestor, to reconstruct phylogenies, you must use derived traits!