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Unformatted text preview: and migrate iii. Parapatric: Divisions of population by mountains/rivers/ext coming up and separating species iv. Sympatric: Division of species in the same area v. Hybrid speciation: mostly in plants b. Reproductive isolation i. Reproductive isolation and phenotypic differentiation are not highly correlated ii. Speciation is hard to observe 1. Not clear when it is happening 2. Sometimes it takes a long time relative to the life of humans 3. One has to know everything about the groups 4. How can you do it? a. Watch microorganisms! b. Biodiversity in sugar water c. Within 5 days, bacteria had diversified into niches d. Bacterial resistance to antibiotics i. Best demonstration of natural selection c. With speciation, within a single genus, it may occur in one way between two species, and another way between two different ones...
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- Fall '07