BIOL 123 Lecture 2: Biol 123 - LTR 2
Document Summary
Greece: scale from lower to higher forms (great chain of being) Steno life and the planet that supported it had a history filled with change, and the. Earth itself kept a record of that history: stratigraphy: is the study of layering in rock. Natural theology: thomas willis brain survey: mammals have larger brains, william paley complex organisms, and relation/similarity to human made machines. Cuvier studies on elephants and fossils of related extinct species. Extinction: permanent loss of a species marked by the death or failure to breed of the last individual. Lamarck plants and invertebrates, fossil records. Diversity of life was product of evolution. Animals/plants can adapt to environment if organ used more = would change during its lifetime. Darwin"s finches = all life had evolved: evolution explains patterns in life today. Common descent: darwin, appendages similar = different uses share common ancestor. 1830"s darwin began to picture evolution as a tree growing new branches.
