BIOL 1202 Chapter : Bio 1202 8 20
Document Summary
22 descent with modification: darwinian view of life. Evolutionary adaptation: change over time of the genetic composition of a population, decent of modern organisms with modification from preexisting, accumulation of inherited characteristics that enhance organisms" ability to survive in specific environments. Lamarck: use & disuse, bodies of living organisms are modified through the use or disuse of parts. Inheritance of acquired characteristics: these modifications are inherited by offspring, ex: giraffe, these ideas turned out to be wrong. Natural selection forces, resulting in the preservation of favorable adaptations. The smallest unit of evolution: one common misconception about evolution is that individual organisms evolve during their lifetime, evolutionary processes (e. g. , natural selections) acts on individuals, but populations evolve. In sexually reproducing organisms, sexual recombination produces most of the variability in each generation: crossing over during prophase i, independent assortment during metaphase i.
