GEOL 105L Study Guide - Midterm Guide: Allele Frequency, Transform Fault, Debris Flow

• School: College of Charleston
• Department: Geology and Environmental Geosciences
• Course: GEOL 105L
• Professor: Maurizio

Document Summary

Natural selection evolution as descent with modification: Change over time produced modern, modified species from ancestral species. Fossils are traces of organisms that lived in the past. Darwin broke the process of evolution by natural selection into four criteria, or postulates: Individuals in a population vary in their traits. Some of these differences are heritable; they are passed onto offspring. In each generation, many more offspring are produced than can survive. Only some will survive long enough to reproduce. Individuals with certain heritable traits are more likely to survive and reproduce. Natural selection occurs when individuals with certain traits produce more offspring than do individuals without those traits. The selected traits will increase in frequency in the population from one generation to the next, causing evolution. Evolution: change in the allele frequencies of a population over time. Plant material does not fully decay anaerobic (low-oxygen) conditions. Amount of decomposition can be used to reconstruct ancient ecology and climate.