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When the "biological-species" concept was abandoned, what qualifies as a new species became subjective. The biological-species concept species means genetic separation from other species is great enough that gene transfer cannot occur. This means that speciation is a tree, not a web. This has practical implications to the endangered species act. While protecting races, subspecies, and strains may be desirable, I am not a supporter of calling these separate species. The "splitters" won out over the "lumpers" on this one.
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