In your own words, define or describe natural selection and evolution. o Describe a make-believe trait( I chose never getting tired) could have been shaped by natural selection. Explain how your trait is the result of evolution through natural selection. Your explanation should demonstrate that you understand what natural selection is, how it works, and how natural selection relates to evolution • Things to consider: • What type of trait are you describing? (morphological, physiological, behavioral, etc.) • What kind of variation it present in your trait (what different versions of the trait are observed within and across populations? • How might this variation affect reproductive success? Which versions would lead to higher reproductive success? What would happen to these versions over many generations? o Describe the 3 necessary and sufficient conditions for natural selection o and explain how these 3 necessary and sufficient conditions pertain to your trait. _
• In order for a trait to evolve through natural selection, some proportion of the variation has to be genetic (aka heritable). Is this plausible for your trait? • In addition it must meet the 3 necessary and sufficient conditions for natural selection. Are they met? o Define genetic drift and gene flow and describe how these processes differ from natural selection o Discuss how gene flow and genetic drift could influence the evolution of your trait
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