This program examines and analyzes a large 2.5-million-year-old fossil find in South Africa which includes fossils similar to man; makes measurements and comparisons between structures of these fossils and modern man; and investigates the linkage between climatic change at the time and the formation of grasslands, and the apparent division in the evolutionary line. After viewing the program, students should have a basic understanding of the guideposts in human evolution. (20 minutes)

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Part of the Series : Evolution: The Evidence for Modern Ideas on Evolution

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		Selection and Adaptation This program illustrates the selection by environmental constraints of the more favorable variations in a population and the inheritance of these variations by succeeding generations, resulting eventually in a population of plants and animals most of...(more details)		DVD $99.95
		DNA and the Evidence for Evolution This program shows the structure and replicating processes of DNA and the effect of genetic mutation; demonstrates the Lederberg Experiment; and recapitulates the evidence provided by fossils and structural and biological homologies that the process ...(more details)		DVD $99.95 DVD + 3-Year Streaming $149.93 3-Year Streaming $99.95
		The Record of the Rocks This program shows the process of sedimentation, which has preserved those life forms extant at the time the rock was formed and-most strikingly where the Colorado River has cut through the Grand Canyon-exposes a veritable history of life on earth; p...(more details)		DVD $99.95 DVD + 3-Year Streaming $149.93 3-Year Streaming $99.95
		Relationships: Structural Homologies and Coevolution This program presents physical evidence of structural homologies between many types of vertebrates, insects, and plants and explains why these homologies suggest a common ancestry; uses fossils to show the development of specialized structures from s...(more details)		DVD $99.95

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