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Unformatted text preview: Bio anthro lecture 2 16:08 Evolution- changes in gene frequency over time (across generations) Process (not progress) Time scalp=generation (parent-offspring) Envirotmental change evolve OR go extinct Evolution act on heritable traits Traits with genetic basis o Blood type? Yes o Body builders body? No o Disease? Some Lamarkian evolution- acquired changes passed to offspring Heritable traits- inheritec by individuals evolution measured over generations why gene frequences change? Environmental pressure Charles Darwin- evolution by naturl selection Natural selection- survila of the fittests differential repuroductive success-changes in gene frequency from generations evolution acts on phenotypes (individuals) phenotype=genotype+enviroment phenotype=genotype (affects future gene frequency) + enviroment (slects for fittest phenotypes) mechanism natural selection resembles aftificla selcion phenotype variation reflects genotypic variation Charles Darwin and Alfred Russel Wallace-...
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This note was uploaded on 04/07/2009 for the course ANTHRO 16254 taught by Professor Bunn,henryt.;hutchinson,sharont.;strier,karent. during the Fall '08 term at Wisconsin.
- Fall '08