BIOC54H3 Chapter 3: Chapter 3
17 Oct 2011
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Chapter 3: development is an interaction of genetic with changing external environment, gene-environmental interaction. Inhibiting agent is a fatty acid compound called ethyl oleate, which foragers manufacture. Nature or nurture fallacy: dna in a gene is only expressed when the environment is appropriate, juvenile hormone, ethyl oleate influence gene activity in bees (eg) Beahviour development requires both genes and environment: learning: change in animal behaviour linked to experience, learning requires the use of brain, shaped by gene influence. Remember general areas and look at cues. What causes individuals to develop differently: members of the same species can differ in behaviour, alaskan chickadee > coloardo chickadees at memory. Alaskan chickadee have larger hippocampus: environment can affect size of hippocampus. Newborn snakes flick tongue at fluids of other species and scent is sent by tongue to vomeronasal organs that detect prey: tongue flicks = responsiveness to food.
