bb2011 ANP220 11 Evolution and behavior

bb2011 ANP220 11 Evolution and behavior - Genes and...

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1 Evolution and behavior ANP 220 meeting #11 Genes and behavior why so much attention? why are (some) people so upset? Goals for today Evolution and behavior behavioral diversity origin of differences; how genes (really) work natural selection and adaptation what changes and why; behavior as an adaptation behavioral evolution the cooperation conundrum Behavioral diversity Origin of behavioral differences
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2 Definition behavior Behavioral differences example do dogs have different personalities? can we reinforce the differences? Genetic basis of behavior mutagenic agents interbreeding artificial selection experiments How genes work to produce behavior assumption “mating gene” turned on start mating season turned off end mating season gene (hormone involved in sexual behavior) winter gene not expressed: no hormone, no mating spring gene expressed: hormone, mating gene (hormone involved in sexual behavior)
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3 How genes work to produce behavior reality gene (hormone involved in sexual behavior) gene not expressed: no hormone, no mating gene (hormone involved in sexual behavior) gene expressed: hormone, mating Examples MHC (major histocompatibility complex) immune response MHC protein in urine & receptor in nose receptor smells “self/ relative” versus “foreigner” Vasopressin water regulation, blood pressure, effects on brain distribution of receptors reward system: formation of pair bond; offspring guarding Genes and behavior genes modulate how organisms react to the environment regulation often environmentally dependent no nature-nurture contrast genetic variation and behavior regulator variation response different gene variation different product (effect or response) protein OR receptor Genotype versus Phenotype genotype individual genetic make-up phenotype observable characteristic “show-off” “daddy”
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This note was uploaded on 11/07/2011 for the course ANP 220 taught by Professor Koenig during the Spring '10 term at SUNY Stony Brook.

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bb2011 ANP220 11 Evolution and behavior - Genes and...

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