BIOL 1202 Study Guide - Quiz Guide: Uniformitarianism, Catastrophism, Radiometric Dating
Document Summary
Change over time of the genetic composition of a population. Decent of modern organisms with modification form preexisting organisms. Different (not everyone is equally suited to survive) Accumulation of inherited characteristics that enhance organisms" ability to survive in specific environments. Bodies of living organisms are modified through the use or disuse of parts. Used their neck more to stretch to reach trees; necks got longer and some how changed dna to effect offspring. Gradualism- slow natural forces (wind, water, earthquakes, volcanoes) cause geological formations (not catastrophes) Uniformitarianism- the mechanism of change are constant over time. Observations of geological formations + rates processes occur = earth much older than a few thousand years. Each finch"s body was designed which a different beak according to their food source (ideally suited for diet and environment) The unequal survival and reproduction of organisms due to environmental forces, resulting in the preservation of favorable adaptations. Process selects from what it available in the gene pool.
