Download Midterm Exam Review Paper - Evolutionary Biology | BIOL 2704 and more Study notes Biology in PDF only on Docsity! 1Evolutionary Biology (BIOL 2704) Dr. Lisa Belden Spring 2011 Lecture #18 Outline • MAIN TOPICS: Mid-semester review Video: Explain the suggested link between harmfulness (virulence) of a pathogen and its transmission mode. Midsemester review 7 main themes 1. communication in science types of scientific literature 2. Defining Evoltuion a. Descent, with modification, from common ancestors b. Change in the characteristics of population over time c. Change in allele frequencies in a population Which of these was Darwin’s orginal definition: Descent, with modification, from common ancestors. Which of these is our current post-modern synthesis definition? Change in allele frequencies in a population. 3. Mechanisms of evolution a. Natural Selection b. Mutation (as mechanism of evolution AND as source of variation that natural selection acts on) c. Gene flow/migration d. Genetic drift e. Nonrandom mating Which of these did Wallace describe? Natural Selection Which of these did Dr. Belden say was more important than the book implied? Nonrandom mating Lecture 17, page 1 1Evolutionary Biology (BIOL 2704) Dr. Lisa Belden Spring 2011 WhWhich of these will impact large populations most? Natural Selection Which of these will impact small populations most? Gene flow/migration, genetic drift Which of these is probably least important overall as a mechanism? Mutation 4. Population genetics as a way to quantify evolutionary changes a. Hardy-Weinbery equilibrium as a tool for thinking about the effects of the various machanims. 5. Other key concepts: a. Darwinian fitness: ability of an individual to survive and reproduce in its environment (relative to others in the population) b. Adaptation: a trait that increases the fitness of an individual (as compares with individuals without that trait). c. Genotype vs. phenotype: i. Genotype: genetic constitution of an individual ii. Phenotype: apparent characteristics of an organism 6. Application of evolutionary biology: a. So far we have discussed: HIV/AIDS research, agriculture, consercation biology we will also talk about: human/wildlife health antibiotic resistance. 7. Skills: a. Identifying primary, secondary, tertiary literature b. Reading graphs and tables c. Reading phylogenetic trees/cladograms READING CITATIONS: Ashley, M.V., M.F. Willson, O.R.W. Pergams, D.J. O’Dowd, S.M. Gende and J.S. Brown. 2003. Evolutionary enlightened management. Biological Conservation 111: 115-123. Info you should be able to get from an article citation: Lecture 17, page 2
