Lecture 14 - Species and Speciation
recorded by: Yale University
published: April 17, 2010, recorded: February 2009, views: 5706
released under terms of: Creative Commons Attribution No Derivatives (CC-BY-ND)
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Speciation is the process through which species diverge from each other and/or from a common ancestor. There are several definitions of species, most of which focus on reproductive isolation and/or phylogenetic similarities. This can cause some controversy. Speciation can result from geographical separation or ecological specialization. There are stages of speciation in which organisms cluster first into distinct populations before finally becoming different species.
Stearns, Stephen C. and Rolf Hoekstra. Evolution: An Introduction, chapter 12
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