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This 2 page Class Notes was uploaded by Sami Schultz on Friday January 8, 2016. The Class Notes belongs to KIN 1024 at Florida State University taught by Dr. Darin Rokyta in Spring 2016. Since its upload, it has received 120 views.
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Date Created: 01/08/16
Evolution 01/08/2016 ▯ Influenza A- RNA virus Hemagglutinin binds host cells Higher mutation rate in RNA viruses ▯ Theory of Special Creation Created recently and independently species do not change, they are created as they are lineages are independent of one another expect fossils to look like something that exists today similarity between animals are said to be due to function o ex: one bird looks like another because they both fly ▯ Theories of Evolution Common ancestry (assume that there was one or two common ancestor that gave rise to everything) Decent with modification Darwin’s theory is a specific theory that relies on natural selection Fossil record should show species that are different Similarities are said to be due to common ancestry not to function ▯ Mechanism of Change Lamarck- inheritance of aquired characters Selection of most fit forms (Wells-1813, Matthew-1831, Wallace- 1858, Darwin-1858) ▯ Darwin’s Goals Demonstrate that species change over time and chare common ancestor o Readily accepted Provide a mechanism-natural selection o Remained controversial until Mendel’s work became well known Before Mendel- ‘blending inheritance’ was readily accepted ▯ Gergor Mendel Austrian mook who bred some 29,000 pea plants as a hobby Experiments on Plant Hybridization was published in german in 1865 Cited three times in the next 35 years (ignored because it was in German) English translation published in 1901 and biologists quickly adopted his concepts of genotypes and phenotypes By the 1930’s, synthesis of Darwinian evolution and mendelian genetics known as the modern synthesis ▯ Observed evolutionary Change Darwin’s main points: o Decent with modification o Natural selection is mechanism Direct observation of evolution o Large populations evolve more quickly than smaller ones o Short generation times and strong selective pressures allow species to evolve more quickly Richard Lenski o E. coli evolution under lab conditions o Took a set of clones of E. coli and let them grow into a population o 10,000 generations showed an increase in relative fitness ▯ ▯ ▯