Biology / Unit 8 Bio 1697 short lesson, about 20 seconds
Sympatric Speciation, Overview
Captions available
The idea
Sympatric speciation is the formation of a new species within a population that continues living in the same location as its ancestral population, without geographic separation.
In practice
Cichlid fish species diverging within the same lake, without any geographic barrier separating them, are undergoing sympatric speciation.
Where people slip
Sympatric speciation happens without geographic separation — its isolating mechanisms must arise from some other source entirely.
Your place on the trail
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