L04 2016 for class notes.pdf

L04 2016 for class notes.pdf - Adaptations A Definition B...

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2/5/16 1 Adaptations A. Definition B. Industrial melanism C. Mimicry D. Resistance evolution E. Coevolution of myxomatosis F. The nature of natural selection evolutionary adaptation = trait favored by natural selection 1. trait must be heritable 2. adaptations increase fitness this implies a comparison 3. whether or not a trait is an adaptation depends on the environment Which of the following is NOT an example of an evolutionary adaptation? a. Male song sparrows that sing more complex songs get more mates. b. Giraffes have long necks, because this allows them to get more food. c. Whales have lungs, because this allows them to remain under water for long periods. d. Octopi, although evolutionarily related to snails, have eyes that are as good as humans.
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2/5/16 2 Normal and sickled red blood cells Sickle-cell anemia Distribution of sickle-cell anemia Malaria life cycle
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2/5/16 3 Distribution of sickle-cell anemia and malaria Industrial melanism in Biston betularia 1956 1996
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2/5/16 4 Blue jay eating a monarch butterfly Monarch butterfly male Viceroy butterfly
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