Natural selection, speciation and genetic disease in populations (sickle-cell anaemia)

What this note covers

1. Natural selection requires inherited variation
2. Struggle and differential selection change gene pools
3. Isolation can allow divergence and speciation
4. Sickle-cell alleles have environment-dependent effects
5. Genetic disease incidence reflects population history
6. Direct counts test selection predictions

6 sections · 10 key terms & formulas · 6 common mistakes