BIOL 1202 Study Guide - Quiz Guide: Cotyledon, Asexual Reproduction, Plat
Document Summary
What is evolution and adaptation: evolution: two main ideas, change over time of the genetic composition of a population, decent of modern organisms with modification from preexisting organisms, evolutionary adaptation, accumulation of inherited characteristics that enhance organisms" ability to survive in specific environments. Natural selection: the unequal survival and reproduction of organisms due to environmental forces, resulting in the preservation of favorable adaptations, process selects from what is available in the gene pool, new characteristics are not created on demand, mechanism behind natural selection o. Homologous & analogous structures: homologous structures, structures or other attributes in difference species that resemble each other because of common ancestry o, vertebrate embryos development. Fossil record: show change in organisms through time, change in types of organisms, past organisms differ from present day organisms, many species have become extinct, not only provides evidence of small scale changes but of origin of major groups, eg: the cetaceans o.