This preview has intentionally blurred sections. Sign up to view the full version.View Full Document
Unformatted text preview: extinctions. Microevolution – A change in a population’s gene pool over a succession of generations; evolutionary changes in species over relatively brief periods of time. Gene Pool – All the genes in a population at any one time. Are there artifacts of animals and plants that resemble present day animals? Paleontology – the study of the ancient; the study of fossils. Fossil – from the Latin, fossilis , meaning dig up. Fossil Record – the ordered array in which fossils appear within layers ( strata ) of sedimentary rocks. Observation from geology is that the top layers of sedimentary rock represent the youngest deposits, while the deeper layers represent the oldest. Geologies can determine the age of the rock by chemical means. Assumption that if an artifact is found in an undisturbed layer that artifact will have the same age as the sedimentary layer. Caution – One fossil does not a theory make....
View Full Document
- Fall '10
- Evolution, gene pool, evolution Natural selection, desirable inherited traits