Overview: Population change over time can be examined through a study of population genetics (Hardy-Weinberg principle) and population growth. Both of these can be expressed quantitatively. Individual members of populations interact with each other as well as with members of other populations, which can have an impact on the populations involved. Communities are a sum of all the different populations living together. Communities may change over time as a result of natural or artificial events.
Hardy-Weinberg Equilibrium
Allele frequencies
Genotypic frequencies
Changes in Hardy-Weinberg Equilibrium
Natural selection
Genetic drift
Gene flow
Non-random mating
Bottleneck effect
Founder effect
Migration
Mutation
Population interactions
Predator-prey
Symbiotic relationships
Interspecific and intraspecific competition
Population Dynamics
Factors affecting population growth (natality, mortality, immigration, emmigration)