Consider the following information. Chimpanzees have a tibia (shin bone), whose

Question

Consider the following information. Chimpanzees have a tibia (shin bone), whose upper end is “T” shaped, as it does not have to support their entire body weight. The “T” shaped tibia is an ancestral characteristic shared by most primates. Humans and members of the genus Australopithecus, a fossil primate, have a “Y” shape to the upper tibia, capable of supporting the full body weight, and evidence of bidpedalism. The “Y” shaped tibia is a recent evolutionary adaptation, or a derived trait. Additionally, Australopithecus shares an ancestral small cranium with chimps and gorillas, while humans have a derived large cranium. You design a phylogenetic tree based on the information describe above. What type of approach have you employed in your classification scheme?

a. Cladistic approach.

b. Traditional approach.

Explanation / Answer

Answer : option B - traditional approach

Reason : It should be a traditional approach. The situation suggest a classification based on the defining shared derived characteristics(such as the shape of the Libia and the shin bone and the shaped of the cranium) and the appearance and structure of organisms.

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