Mechanisms (Causes) of Evolution
4 Mechanisms:
1. Genetic Drift-change in the frequency of alleles
2. Gene Flow-physical movement of alleles from one population to another
3. Bottlenecking-gene loss that results from an event that drastically reduces the size of a population; reduces the population's genetic diversity (less variation)
4.Mutations-change in DNA sequence; may be beneficial, harmful, or neutral
1. Genetic Drift-change in the frequency of alleles
2. Gene Flow-physical movement of alleles from one population to another
3. Bottlenecking-gene loss that results from an event that drastically reduces the size of a population; reduces the population's genetic diversity (less variation)
4.Mutations-change in DNA sequence; may be beneficial, harmful, or neutral