Hank describes the five factors that explain changes in allele frequency, which are at the heart of how and why evolution happens. The five factors he describes are: natural selection, sexual selection, mutation, genetic drift, and gene flow.
Hank provides background information on the biologist who contributed to evolutionary history: Charles Darwin. He also explains the four principles of Darwin's idea of natural selection, which are variation, heritability, struggle for existence, and survival and reproduction rates.
Key Words: Genetic Drift, Fitness, Variations of Phenotype, Heritable, The Struggle for Existence, Survival and Reproduction Rates
Jimmy discusses how ads have been interwoven into American popular culture. They first found their home interspersed in television programming, then in popups, and more recently in the news via the Internet. Jimmy states that the nature of ads and their placement have adapted to changes in technology.
In this clip, Charlie suggests using an evolutionary algorithm to search for abnormal behavior after a murder occurs in a video game with a real-life component. Evolutionary algorithms imitate the biological process of natural selection to find optimal solutions.