1. Genetic drift and Speciation
How do new species form?
Genetic drift and Speciation

2. Speciation
A species is defined as a population or group that can interbreed and produce fertile offspring.
When some members stop interbreeding a change in the gene pool can occur.
The formation of a new species is called speciation.

3. Bottleneck Effect
If a population is reduced by a disease or a natural disaster…if the final population left has less genes than the original population…this is the bottleneck effect.

7. Founder Effect
When a few individuals colonize a new habitat, they may have gene frequencies different than the original population.

8. Hardy-Weinberg
Genetic Equilibrium – when the frequencies of genes in a gene pool are not changing.
Remember 5 fingers

9. 5 Fingers Pinky = No Small Population Ring = No Random Mating
Middle = No Mutation
Pointer = No Migration
Thumb = Thumb up, Thumb Down for
No natural selection