Biology Notes Biology: Dr. Hensley / Mrs. Ingram 2016 Evolution Unit Vocabulary Divergent Evolution (not in textbook) –New species evolving from common ancestor Commo n Ancesto r Convergent Evolution – “Come together” Develop similar features because they are doing same thing in same environment. Example: Ocean = fish, birds, and mammals. Dolphins (mammals) look a lot like Sharks (fish). Coevolution - When there is a relationship between 2 types of organisms as one evolves, the other must evolve. Lynx Rabbit Adaptive Radiation (p. 436) – “Tweak the Beak” in many directions with common ancestor in the center such as Darwin’s Galapagos Finches Original Finch Gradualism – When evolution takes place at a steady pace over a long time Punctuated Equilibrium – A rapid, catastrophic change in the environment such as the ice age or meteor hitting the Earth making a major change in the environment and increases rate of evolution in species.