colloquium entitled ‘ ‘ Genetics and the Origin of Species , ’ ’ organized by Francisco J . Ayala


A recent criticism that the biological species concept (BSC) unduly neglects phylogeny is examined under a novel modification of coalescent theory that considers multiple, sex-defined genealogical pathways through sexual organismal pedigrees. A competing phylogenetic species concept (PSC) also is evaluated from this vantage. Two analytical approaches are… (More)


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