BIO1130 lctA01_STDVERx3

Bio1130 organismal biology 56 universit dottawa

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Unformatted text preview: al (fitness) Experiment 2: Locate light and dark coloured trees. BIO1130 Organismal Biology 56 Université d’Ottawa / University of Ottawa 10:34 AM High coal burning industry causes discoloration in some areas igher proportion of black phenotype Peppered moth Result 1: Birds selected most visible moths Result 2: Dark trees showed same distribution as coal based industry Arguments against natural selection- data is corrupt because moths do not live on trunks but on branches. BIO1130 Organismal Biology 57 Université d’Ottawa / University of Ottawa BIO1130 Organismal Biology 10:34 AM Page 19 History of Biology before Darwin Moths rest upon their coloration First piece of evidence for natural selection. Is industrial melanism tainted? maybe but it is our best guess and it is an alternate explanation/guess Peppered moth Question: Do moths “rest” on backgrounds that match their colouration? Question: What impact would the clean air act, that reduced pollutant immisions have on the moth population morphs? Question: What happens to other moths with light and dark colour morphs BIO1130 Organismal Biology 58 Université d’Ottawa / University of Ottawa BIO1130 Organismal Biology 10:34 AM Page 20...
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