BIOL 1202 Chapter : Chapter 22
Document Summary
Descent with modification: a darwinian view of life. The first convincing case of evolution was published by charles darwin in 1859. --evolution: is the transformation of the life forms on earth over time: descent with modification: changes in the genes that can be passed on. What kind of change: a change in the frequency of the alleles of a population. An allele is a form of a gene: mutations cause a change thereby causing evolution, mutation, which favors one allele over another, mutation which creates a new allele that is favored. How much time: several generations for the organism: not all organisms have the same generation time, for bacteria => a day or two could be plenty, for humans => may be 200-300 years. A french anatomist (cuvier) founded the science of paleontology, the study of fossils in the late 1700"s and early 1800"s. 2 explained the layers of different species were caused by separate catastrophic events.
