AP B 51 - Chapter 51 ~Animal Behavior Behavior- what an...

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Unformatted text preview: Chapter 51 ~Animal Behavior Behavior- what an animal does and why it does it. Ethology~ study of animal behavior Behavior results from both genes and environmental factors. Causation: proximate~ physiological & genetic mechanisms of behavior ultimate~ evolutionary significance of behavior Observation of Magnolia Warbler Proximate Breeds in spring and early summer Hypothesis-effect of increased day length on photoreceptors brings on breeding. Stimulus results in neural and hormonal changes that induce this behavior. Ultimate Why did natural selection favor this behavior? Hypothesis-breeding is most productive or adaptive at this time. Food more plentiful. Innate Behavior Developmentally fixed Often attributed to genetic programming without environmental influence. Baby birds opening mouth for food Key point-is the range of environmental differences among individuals does not appear to alter the behavior. Innate Behavior...
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AP B 51 - Chapter 51 ~Animal Behavior Behavior- what an...

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