Biology 242: Lecture 8Spring 2001

Population Genetics

  1. Modern evolutionary synthesis

  2. Population genetics
    1. Terms
      1. Population
      2. Species
      3. Gene pool
      4. Microevolution
    2. Hardy-Weinberg theorem
    3. Hardy-Weinberg equilibrium
    4. Hardy-Weinberg equations
      1. Allele frequencies
        1. Let p = frequency of allele A
          let q = frequency of allele a
        2. p + q = 1
      2. Genotype frequencies
        1. Let p2 = frequency of genotype AA
          let 2pq = frequency of genotype Aa
          let q2 = frequency of genotype aa
        2. p2 + 2pq + q2 = 1
      3. Conditions
        1. Population size must be very large
        2. No emigration/immigration
        3. No mutations
        4. Random mating
        5. No natural selection
      4. Examples

  3. Agents of microevolution
    1. Genetic drift
      1. Bottleneck effect
      2. Founder effect
    2. Gene flow
    3. Mutation
    4. Nonrandom mating
    5. Natural selection


"Be what you wish others to become."
Apples of Gold