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European land snail - PowerPoint PPT Presentation

CHAPTER 13

CHAPTER 13. How Populations Evolve. REALLY Looking at Organisms. Notice differences from other organisms Features that show the relationship of an organism to where it lives, what it does Ex: marine iguanas to land iguanas (claws, tail = diet). Sect 13.1. Darwin & His Boat Trip.

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Evolution

Evolution. Evolution. Evolution occurs whenever there is a change is frequency of genes in a population Individuals do not evolve, but populations do There are several agents of populations change; name some: Genetic drift, gene flow, meiotic drive, & mutation. Natural Selection!!.

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European land snail - PowerPoint PPT Presentation

CHAPTER 13

Evolution