W10_103_8a_life2

W10_103_8a_life2 - Causes of Diversity and Evolution of...

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Causes of Diversity and Evolution of Life on Earth Charles Darwin Alfred Russell Wallace Causes for Diversity of Life 1. All populations have the potential to increase in size 2. Many populations retain a constant size Many individuals die young 3. Individuals in a population differ in their abilities Some of these abilities affect survival 4. Best adapted individuals are most likely to survive and produce offspring (Natural Selection) “Abilities” are passed on to offspring (Genetics) 5. Over time the “abilities” of the population shift to include advantageous traits (Evolution)
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Note: Natural Selection Affects Individuals Evolution Affects Populations Net Result: Populations change with time to become better adapted to their environment (Evolution)
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Example: Microbe Resistance Apply Antibiotic Survivor’s with Resistance Reproduce How does it Work?
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W10_103_8a_life2 - Causes of Diversity and Evolution of...

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