BIOL 1202 Chapter : Chapter 22
Document Summary
Two main ideas: change over time of the genetic composition of a population, decent of modern organisms with modification form preexisting. Evolutionary adaptation organisms: accumulation of inherited characteristics that enhance organisms", all living organisms originate from one organism ability to survive in specific environments. Natural selection: a population with some that have better characteristics than others and will survive and be passed on. Fossils: the remains of traces of organisms from the past: they are covered in superimposed layers of rocks called strata. The theory of catastrophism: the principle that events in the past occurred suddenly and were caused by mechanisms different form those operating in the present. Scottish geologist james hutton developed gradualism: the principle that: adapted by a french scientist georges cuvier. Earth"s geologic features could be explained by gradual mechanisms still operating; the effect of a slow but continuous process.
