BZ 212 Study Guide - Midterm Guide: Myxozoa, Polyphyly, Diploblasty
Document Summary
Polyphyletic- 2 groups not related but grouped together. Polytomy- a node with lots of branches: cloud. Common ancestry-when a group of organisms both come: from a recent common ancestor. Cladogram-hypothesized statement of evolutionary history and relationships. Lyell- father of geology-took hutto(cid:374)"s idea of the earths age. Darwin- (found marine fossils on mountains)- on the origin of species by means of. Natural selection- all organisms show variation, produce more offspring than can survive, struggle for survival, differences in organisms causes some to be favored, the result is natural selection. Alfred russel wallace- published papers with darwin back to back. Mendel- father of genetics- created the synthetic theory. Synthetic theory- blend of statistics, mathematics, genetics, paleontology, biogeography, embryology, systematics, and animal behavior. Apomorphy- advanced derived trait- unique to species and its descendants. Plesiomorphy-primitive not derived- trait from common ancestor. Autapomorphy- distinctive feature unique to the given taxon. Snapomorphy- shared trait with a monophyletic group (ancestor and all descendants)
