Biology 1201A Lecture Notes - Lecture 20: Reproductive Isolation, Phylogenetic Tree, Ingroups And Outgroups
9 Dec 2015
School
Department
Course
Professor
Document Summary
Group things based on homologous traits (eg. sharing eye shape) *exam: understand outgroup analysis, what an outgroup is and the process on exam she will not make you build a phylogenetic tree from scratch but she will ask if it makes sense on the test with a diagram. *the line is the split, a hash mark. Include a taxon (the outgroup") that is known to be distantly related to the group of interest. Must have one-character state in common compare the study group to the outgroup whatever trait it has in common with the in-group, it must be something inherited by the ancestor. Tells us what the old version was: outgroup is the root of the tree, identifying the. Sharon cheng 2: eg. camera eyes looking to see which it is due to, common ancestry or from evolution, there needs to be other lineages that lost the camera eye.
