| A | B |
|---|
| fossils | indirect evident for macroevolution, past evidences of life |
| radiometric dating | Ca, K and C isotopes used to piece together history |
| macroevolution | major trends and changes in organisms over long periods of time |
| Pangea | proposed supercontinent of that explains distribution of fossils |
| plate tectonics | movement of the earth's crust, continental drift |
| comparative morphology | study of similar bone structure, usage, and developmental patterns |
| comparing patterns of embryonic development | may offer evidence of evolutionary relationships |
| gene flow | movement of individuals immigrating |
| biogeography | comparison of organism adaptations to similar regions |
| Darwin and Wallace | proposed natural selection as a mechanism for evolution |
| Hardy-Weinberg | proposed mathematical support for tracking evolution throughout generations |
| sexual dimorphism | distinctly different phenotypes of males and females are selected for resulting in a disruptive selection |
| balanced polymorphism | example - heterozygotes for sickle-cell are selected for and homozygous conditions are less favorable |
| genetic drift | a random change in allele frequencies due possibly to a natural disaster |
| gene flow | individuals moving in and out of a population |
| mutation | raw material for evolution - provides new alles for a population |
| directional selection | lighter colored mice survive better than black mice because of the colors of the surrounding rock colors |
| disruptive selection | two extreme phenotypes of a population have a better chance for survival than the average phenotype |
| stabilizing selection | the average phenotype survives the best and is the most common in the population |
