2-Evol Perspectives Figs BW

Species produce more offspring than resources can

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Unformatted text preview: s system 1. Species produce more offspring than resources can support 2. Individuals vary in ability to compete for resources, survive, and reproduce (variation) 3. Some of this variation is heritable (inheritance) 4. Differences in survival and reproduction lead to overrepresentation of more successful forms in next generation (selection) 5. Selection over generations leads to change in composition of the population (evolution) darwin's genius is to draw the next 2 conclusion from the first 3 observation: 4. this is the process of natural selection. natural selection is different from artificial selection (done purposely by breeders of domestic plants or animals 5.over time, selection operate repeatedly on successive generation to produce changes in composition of population. Natural Selection ≠ Survival of the Fittest* *Herbert Spencer (1894) • Selection maximizes reproductive fitness, not health or longevity • Evolutionary success of humans did not require a “long” life let's begin discussion first by correcting misconception:natural selection do NOT mean sur...
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This document was uploaded on 03/09/2014 for the course EXSC 301 at USC.

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