E&EB 122 - Lecture 14 - Species and Speciation
Lecture 14 - Species and Speciation
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.
You may view the Yale Galapagos site at: http://cmi2.yale.edu/galapagos_public
Stearns, Stephen C. and Rolf Hoekstra. Evolution: An Introduction, chapter 12