Changes

Chimpanzees and humans belong to different [[genus|genera]], indicated in Blue. Formation of [[species]] and [[subspecies]] is also indicated, and the formation of "races" is indicated in the green rectangle to the right (note that only a very rough representation of human [[phylogeny]] is given, and the points made in the preceding section, insofar as they apply to an "African race", are understood here). Note that vertical distances are not meaningful in this representation.  

Chimpanzees and humans belong to different [[genus|genera]], indicated in Blue. Formation of [[species]] and [[subspecies]] is also indicated, and the formation of "races" is indicated in the green rectangle to the right (note that only a very rough representation of human [[phylogeny]] is given, and the points made in the preceding section, insofar as they apply to an "African race", are understood here). Note that vertical distances are not meaningful in this representation.  

Most evolutionary scientists have rejected the identification of races with clades for two reasons.  First, as Rachel Caspari (2003) argued, clades are by definition monophyletic groups (a taxon that includes ''all'' descendants of a given ancestor) since no groups currently regarded as races are monophyletic, none of those groups can  be clades.

Most evolutionary scientists have rejected the identification of races with clades for two reasons.  First, as Rachel Caspari (2003) argued, clades are by definition monophyletic groups (a taxon that includes ''all'' descendants of a given ancestor) since no groups currently regarded as races are monophyletic, none of those groups can  be clades.