Transcript EVOLUTIONARY ANALYSIS
EVOLUTIONARY ANALYSIS • 1. To show the kind of questions evolutionary biologist investigate. • 2. Demonstrate how an evolutionary view can inform researchers. • 3. Introduce new concepts. Evolution of HIV • • • • Human Immunodeficiency viruses HIV-1 HIV-2 These are the pathogens that cause the acquired immune deficiency syndrome (AIDS) HIV- HUMAN IMMUNODEFICIENCY VIRUS • HIV is a compelling case study because it raises issues that influence the lives of everyone. • HIV is a virus that rapidly evolves drug resistance. • HIV exemplifies two of the most pressing public health issues of our time.the DEFINITIONS • Evolution• 1. Descent of organisms from common ancestors • 2. With the genetic and phenotypic changes over time • 3. These changes make them more suited to the local environment. • Allele• 1. Alternative forms of a gene • 2. Found at the same point on homologous chromosomes. Questions • 1. Why have promising AIDS treatments, like AZT, proven ineffective in the long run? • 2. How does HIV win its battle against the immune system? • 3. Why does HIV kill people? • 4. Where did HIV come from?