Unit 3023: Population Genetics

1. Introduction to Population Genetics

• Definition and scope of population genetics
• Study of genetic variation within and between populations
• Factors influencing genetic diversity
• Applications in evolutionary biology and other fields

2. Genetic Variation in Populations

• Sources of genetic variation:
  • Mutation: types and rates
  • Recombination: role in generating variation
  • Gene flow: movement of alleles between populations
  • Genetic drift: random changes in allele frequencies
• Contribution of these sources to population diversity

3. Hardy-Weinberg Equilibrium

• Principles and assumptions of the Hardy-Weinberg model
• Mathematical formulation and allele/genotype frequency calculations
• Conditions required for equilibrium:
  • Large population size
  • No mutation
  • No migration
  • Random mating
  • No natural selection
• Significance and applications in detecting evolutionary forces
• Examples of deviations and what they indicate

4. Genetic Drift and Founder Effect

• Definition and significance of genetic drift
• Effects of population size on drift intensity
• Bottleneck events:
  • Causes and genetic consequences
• Founder effect:
  • Colonization by a small number of individuals
  • Impact on genetic variation and population structure
• Case studies illustrating genetic drift and founder effects

5. Gene Flow and Migration

• Concept of gene flow and its role in population genetics
• Mechanisms facilitating gene flow
• Factors influencing gene flow:
  • Geographic barriers
  • Behavioral and ecological factors
• Implications of gene flow on genetic diversity and population differentiation
• Measuring gene flow

6. Natural Selection and Adaptation

• Overview of natural selection as an evolutionary force
• Types of selection:
  • Directional selection
  • Stabilizing selection
  • Disruptive selection
• Selective pressures and environmental influences
• Changes in allele frequencies due to selection
• Examples of adaptation in populations

7. Molecular Evolution

• Molecular mechanisms driving evolution
• Molecular clocks:
  • Concept and usage
• Molecular phylogenetics:
  • Constructing evolutionary trees
  • Inferring relationships using genetic data
• Genetic markers used in evolutionary studies

8. Population Genetics in Conservation Biology

• Importance of genetic data in conservation
• Assessing population viability through genetic diversity
• Inbreeding and its genetic consequences
• Genetic management in conservation:
  • Strategies to maintain or increase diversity
  • Case studies
• Use of molecular tools in conservation genetics