Chapter 24 EVOLUTION BY NATURAL SELECTION

Chapter 24 EVOLUTION BY NATURAL SELECTION -...

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A scientific view Summary *Theory: *Pattern *Process *Theory of evolution *History *Pattern *Process *Evidence *How does natural selection work? What do you think? *What does evolution mean, in general? *What does evolution mean to biologists? Theory *Definition - an explanation for a general class of phenomena or observations. *Theories have 2 components: *Pattern = *Process = Theory of Evolution *History *Aristotle, fig 24.1 –  *de Lamarck – *Darwin and Alfred Russel Wallace - ???? *Explains how different species are able to live in many types of environments. Theory of Evolution – The Pattern *What is the Pattern?  (“Descent with modification”):   *1) Species existing today have descended from preexisting species (i.e. are  related) *2) Species are modified or changed over time. 1
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Chapter 24 EVOLUTION BY NATURAL SELECTION -...

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