Module.2.study.guide.part2

Module.2.study.guide.part2 - Biology 1510 Module#2 Part 2...

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Biology 1510 Module #2 Page 1 of 7 Part 2 Book: Chapter 51: 51.1, 51.2, 51.5, 51.6 Pages 1106-1107, 1110-1111, 1121-1131 September 17, 2007 51.1 behavior:      everything an animal does and how it does it Proximate questions      about behavior focus on the environmental stimuli, if any, that  trigger a behavior, as well as genetic, physiological, and anatomical mechanisms  underlying a behavioral act ”how” question Ultimate questions      address the evolutionary significance of a behavior  “why” questions o Proximate mechanisms produce behaviors that have evolved b/c they reflect  fitness in some particular way Ethology:       the scientific study of how animals behave, particularly in their natural  environments o Tinbergen’s 4 questions:     1) What is the mechanistic basis of behavior, including chemical,  anatomical, and physiological mechanisms? 2)How does development of the animal, from zygote to mature individual,  influence the behavior? 3) What is the evolutionary history of the behavior? 4) How does the behavior contribute to survival and reproduction  (fitness)? ultimate; complementary o Fixed action pattern:      a sequence of unlearned behavioral acts that is essentially  unchangeable and , once initiarted , is usually carried to completion Triggered by an external sensory stimulus- sign stimulus Tinbergen- sticklebacks males attack anything red o Imprinting:      type of behavior that includes both learning and innate components  and is generally irreversible. Has a sensitive period - limited phase in an animal’s development that is  the only time when certain behaviors can be learned Ex)young geese follow first thing that walks away from them 51.2 Many behaviors have a strong genetic component- especially those pertaining to  anatomical and physiological aspects of phenotype Innate behavior     : behavior that is  developmentally  fixed, despite internals and external  environmental differences during development and throughout life o Under strong genetic influence Directed movement- clear role of genes in the control of these animal movements
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Biology 1510 Module #2 Page 2 of 7 Part 2 o Kinesis     : simple change in activity or turning rate in response toa stimulus o Taxis     : more or less automatic, oriented movement toward (a positive taxis) or  away from (a negative taxis) some stimulus ex) trout o Migration Animal signs and communication o Signal     : a behavior that causes a change in another animal’s behavior o Communication     : transmission of, reception of, and response to signals
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This note was uploaded on 07/06/2009 for the course BIOL 1510 taught by Professor Jungh.choi during the Fall '07 term at Georgia Tech.

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Module.2.study.guide.part2 - Biology 1510 Module#2 Part 2...

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