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Ch25_Learning objectives

Ch25_Learning objectives - CH25 THE HISTORY OF LIFE ON...

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CH25 - THE HISTORY OF LIFE ON EARTH Learning objectives The Origin of Life 1. Describe the four stages of the hypothesis for the origin of life on Earth by chemical evolution. 2. Describe the contributions that A. I. Oparin, J. B. S. Haldane, Stanley Miller, and Harold Urey made toward developing a model for the abiotic synthesis of organic molecules . Describe the conditions and locations where most of these chemical reactions likely occurred on the early Earth. 3. Describe the evidence that suggests that RNA was the first genetic material. Explain the significance of the discovery of ribozymes . Describe how natural selection may have worked in an early RNA world. 4. Describe how natural selection may have favored the proliferation of stable protobionts ( protocells ) with self-replicating, catalytic RNA. Major Events in the History of Life on Earth 5. Explain why the fossil record provides an incomplete chronicle of evolutionary change. 6.
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Ch25_Learning objectives - CH25 THE HISTORY OF LIFE ON...

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