BIOL 1202 Chapter : Chapter 22 Notes-Pomarico
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 lifeforms on earth over time. New alleles; red is now introduced to purple and white. Several generations for the organism about 50 generations. A change in the gene frequency of the alleles of a population. Problem with this organism turned into this organism approach. Mutation which creates a new allele that is favored. You can also look for changes in dna which can be seen much sooner than phenotypes. The most popular hypothesis for the origin of species was creationism. --creationism states that all species were created exactly as they exist today. May be strictly biblical (creation) or may involve continual creation (animals are created as time goes on). For bacteria => a day or two could be plenty.
