#8.3i
Understand that selection pressures acting on the gene pool change allele frequencies in the population, including:
- stabilising selection maintaining continuity in a population
- disruptive selection leading to changes or speciation.
#8.3ii
Understand that sometimes changes in allele frequencies can be the result of chance and not selection, including genetic drift.
#8.3iii
Understand that allele frequencies can be influenced by:
- population bottlenecks
- founder effect.
#8.3iv
Understand how the Hardy-Weinberg equation can be used to monitor changes in the allele frequencies in a population.