Lecture 022 - From Micro To Macro - Species and Speciation

Lecture 022 - From Micro To Macro - Species and Speciation...

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Unformatted text preview: 1 Bio1222 From micro to macro: speciation From micro to macro: speciation • Defining species: species concepts • morphological • biological • phylogenetic • Speciation • isolation • divergence • secondary contact Bio1222 Defining species: species concepts Defining species: species concepts • Why does it matter whether two populations are one species or two? – fundamental units of evolution – legal protection 2 Bio1222 Morphological species concept Morphological species concept • identify species by morphological similarity (colour, size, shape etc) • occupy distinct clusters in phenotypic space Bio1222 Problems with this species concept Problems with this species concept • phenotypic variation within a population • phenotypic similarity between populations • doesn’t explain why members of same species are similar 3 Bio1222 Biological species concept Biological species concept • group of actually or potentially interbreeding organisms, reproductively isolated from other...
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This note was uploaded on 04/04/2009 for the course BIOLOGY 1222 taught by Professor Haffie during the Spring '09 term at UWO.

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Lecture 022 - From Micro To Macro - Species and Speciation...

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