Australopithecus

Australopithecus - Australopithecus Fossils and fragments...

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Unformatted text preview: Australopithecus Fossils and fragments of jaws suggest to scientists that the ancestors of monkeys, apes, and humans began their evolution approximately 50 million years ago. Additional evidence for this evolution has been derived from experiments in biochemistry and changes that occur in the DNA of cells. Mutation rates in the DNA have been calculated, and evolutionary changes can be determined from these calculations. By noting mutation rates, scientists can estimate the time since two species diverged from a single ancestor, and they can develop a family tree. Scientific evidence indicates that the first hominids (humanlike creatures) belonged to a group called Australopithecus. Members of the genus Australopithecus are believed to have displayed a critical step in human evolution: the ability to walk upright on two feet. In 1924, the complete skull of a young child was found in a limestone quarry in South Africa. The In 1924, the complete skull of a young child was found in a limestone quarry in South Africa....
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This note was uploaded on 11/11/2011 for the course BIO 101 taught by Professor Pesthy during the Fall '07 term at Texas State.

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