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State Standard SB5D. Relate natural selection to changes in organisms Natural Selection (15.3)
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Evolution Natural Selection Nature acts to select the individuals that are best ____________ for survival and reproduction in a particular ____________ 15.3 Natural Selection-Speciation-Resistance Chapter 15
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Principles of Natural Selection Evolution Individuals in the population show ____________. The variations are ____________. Members of the population have more offspring than can survive on available resources (____________). Variations that increase reproductive ____________ have a greater chance of being ____________ on. Chapter 15 Natural selection takes place when…
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15.3 Natural Selection-Speciation-Resistance Industrialization & the peppered moths
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Evolution ____________ selection operates to ____________ ____________ expressions of a trait when the average expression leads to higher fitness. 15.3 Natural Selection-Speciation-Resistance Chapter 15 Ex: Peppered Moths before the Industrial Revolution
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Evolution ____________ selection makes an organism more fit by selecting ____________ ____________ ____________. 15.3 Natural Selection-Speciation-Resistance Chapter 15 Ex: Pollution from the Industrial Revolution caused directional selection in the peppered moths.
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Evolution ____________ selection is a process that ____________ a population into two groups. 15.3 Natural Selection-Speciation-Resistance Chapter 15 Ex: Different rock types in the same biome will favor different coat varieties of these mice
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Evolution ____________ selection operates in populations where males and females ____________ significantly in appearance. Qualities of sexual attractiveness appear to be the ____________ of qualities that might enhance survival. 15.3 Natural Selection-Speciation-Resistance Chapter 15
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Evolution Adaptive Radiation – AKA Divergent Evolution/Speciation Can occur in a relatively short time when one species gives rise to many different species in response to the creation of ____________ ____________ or some other ecological opportunity 15.3 Natural Selection-Speciation-Resistance Chapter 15
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Evolution Coevolution The relationship between two species might be so close that the evolution of one species ____________ the evolution of the other species. Associated with ____________ 15.3 Natural Selection-Speciation- Resistance Chapter 15
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Evolution ____________ species evolve ____________ traits because of similar environmental pressures. Convergent Evolution 15.3 Natural Selection-Speciation-Resistance Chapter 15
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Evolution Rate of Speciation Evolution proceeds in small, gradual steps according to a theory called ____________. ____________ ____________ explains rapid spurts of genetic change causing species to diverge quickly. 15.3 Natural Selection-Speciation-Resistance Chapter 15
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Evolution 15.3 Natural Selection-Speciation-Resistance Chapter 15
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