11:216:101 Lecture Notes - Lecture 6: Richard Lenski, Maltose, Medium Ground Finch

• School: Rutgers University
• Department: Ecology, Evolution, and Natural Resources
• Course: 11:216:101
• Professor: S Sukhdeo

Document Summary

40% of plant species is result of hybrids. Common among birds, fish, insects, and marine mammals. 1981 big bird, huge head, 28 grams (medium ground finch was 18 grams) Big bird: hybrid cactus finch x medium ground finch. Huge drought 2003-05 90% of all birds died. 2 big birds + 26 offspring survived and isolated themselves. F-e-d-c-b-a you can mate above and below your species, no species jumping mating. Phylogenetic tree: evolutionary relationship among various species that are believed to a common ancestor. Family tree great for humans, shit for animals. Look at genes, slow evolving genes, post evolving genes, very important conservative gene. Parsimony: minimum net amount of change node= hypothetical common ancestor x= common ancestor to a+b. Use of laboratory + controlled field manipulation to investigate evolutionary processes. Criteria: organism/plants have to reproduce fast generations ) Dr. richard lenski- michigan state u: the man who bottled evolution.