species
species
species
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Cladistics• Cladistics groups organisms by commondescent• A clade is a group of <strong>species</strong> that includes anancestral <strong>species</strong> and all its descendants• Clades can be nested in larger clades, but notall groupings of organisms qualify as cladesCopyright © 2008 Pearson Education, Inc., publishing as Pearson Benjamin Cummings