Speciation: Allopatric, Sympatric and Parapatric Modes

What this note covers

1. Speciation and Reproductive Isolation: Foundational Concepts
2. Allopatric Speciation: Geographic Isolation as the Driver
3. Sympatric Speciation: Divergence Within the Same Geographic Area
4. Parapatric Speciation: Divergence Across Contiguous but Differentiated Habitats
5. Cessation of Gene Flow and Accumulation of Genetic Differences
6. Identifying Speciation Mode from Biological Scenarios
7. Reinforcement, Secondary Contact and the Completion of Speciation

7 sections · 14 key terms & formulas · 6 common mistakes