The Exact Arrangement of the Ancient Hominin Phylogeny Is Unknown

question 48

Multiple Choice

The exact arrangement of the ancient hominin phylogeny is unknown, but MOST likely

• A) Ardipithecus is at or near the base, and Australopithecus garhi gave rise to early Homo.
• B) robust australopithecines such as Australopithecus boisei are at the base and more gracile forms such as Australopithcus africanus evolved from those early robust forms.
• C) Australopithecus anamensis evolved directly into early Homo.
• D) all of the different so-called species of Australopithecus are really one species, with the robust forms being males and the more gracile forms being females.

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Definitions:

Contractions

The process of muscle fibers shortening and generating force, typically leading to the movement of the body or of materials within the body.

Anterior

Referring to the front or forward part of an organism or one of its structures.

Superior

An anatomical term indicating a location above or higher relative to another part of the body or structure.

Inferior

A term used in anatomy to describe a position lower in the body or closer to the feet compared to another structure in the standard anatomical position.