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Unformatted text preview: - species can also reproduce asexually Evolutionary Species Concept - George G. Simpson, 1940s A species is a single lineage of ancestor descendent populations that maintains its identity from other such lineages and that has its own evolutionary tendencies and historical fate. Phylogenetic Species Concept A species is an irreducible (basal) grouping of organisms diagnosably distinct from other such groupings and within which there is a parental pattern of ancestry and descent....
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- Spring '07