BIOL 1202 Lecture Notes - Lecture 1: Biogeography, Introduced Species, Soapberry
Document Summary
22. 1 the darwinian revolution challenged traditional views of a young earth inhabited by unchanging species (cid:1) (cid:1) (cid:1) Change over time of the genetic composition of population. Decent of modern organisms with modification from preexisting. Process: revealed by data from a range of scientific disciplines, including biology, geology, physics, and chemistry. Data are facts and observations: consists of the mechanisms that produce the observed pattern of change. Mechanisms represent natural causes of the natural phenomena we observe. (cid:1) (cid:1) (cid:1) (cid:1) Accumulation of inherited characteristics that enhance organisms" ability to survive in specific environments. Darwin connected adaptation and origin of species as closely related processes. available on island: finches" beaks and behaviors are adapted to types of foods. Catastrophism: the principle that events in the past occurred suddenly and were caused by mechanisms different from those operating in the present, proposed by georges cuvier, ex. Flood that destroyed many species at the time.
