Biology 1225 Chapter Notes - Chapter 11: Insect Wing, Radionuclide, Plate Tectonics
23 Sep 2013
School
Department
Course
Professor
Document Summary
Darwin"s observations of the natural world led him to propose that evolution could occur by way of a process called natural selection. There is mow much evidence in support of evolution that comes from fossils, the geologic record and radioactive dating of rocks. Further evidence comes from comparative studies of anatomy and biochemistry of different lineages that have helped us to identify patterns of change through time. Natural selection only acts on a trait if it is. The environment - individuals show variation and the environment selects the most fit. Another important point to note is that while natural selection certainly acts on an individual, it is actually populations that evolve, evolution is a population based theory. In other words how many fertile offspring . natural selection differential survival and reproduction of individuals of a population based on differences in shared, heritable traits.
