BIO 301M Lecture Notes - Lecture 1: Geologic Time Scale, Plate Tectonics, Radiometric Dating
Document Summary
Fishes and porpoises look alike but are different internally: ex. If animals are perfect why did they go extinct: georges curvier believed that catastrophic geological events shaped earth"s surface and caused extinctions= catastropism, now and abandoned theory. Lamarck believed environmental pressures caused an internal need for change in body and resulting change would be inherited by offspring: ex. Giraffe would stretch neck to reach leaves, getting a long neck. Inheritance theory incomplete: darwin read charles lyell who proposed theory of uniformity- gradual, repetitive change had shaped earth.
