| 1. | Allopatric speciation is thought to be the dominant mode of speciation.
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| 2. | "Cornu aspersum " is a typically allopatric populations.
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| 3. | It is divided into four subspecies and two allopatric breeding ranges.
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| 4. | The two species are allopatric and restricted to the Afrotropic ecozone.
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| 5. | The two show differences in habitat preference and have allopatric distributions.
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| 6. | In species diversity, island biogeography most describes allopatric speciation.
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| 7. | This may be an example of allopatric speciation in ice age refugia.
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| 8. | The two species are allopatric, but not contiguously so.
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| 9. | Many allopatric sub-species show differences in calls.
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| 10. | Thus vicariance is a necessary precursor to allopatric speciation.
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