Figure 204 Humans, Chimpanzees, Gorillas, and Orangutans Are Members of a a Clade

Multiple Choice

Figure 20.4 Humans, chimpanzees, gorillas, and orangutans are members of a clade called the great apes, which shared a common ancestor about 18 million years ago. Gibbons and siamangs comprise a clade called the lesser apes. Tree-branch lengths indicate elapsed time.
-Assuming chimps and gorillas are humans' closest relatives, removing humans from the great ape clade and placing them in a different clade has the effect of making the phylogenetic tree of the great apes

A) polyphyletic.
B) paraphyletic.
C) monophyletic.
D) conform with Linnaeus's view of great ape phylogeny.