BIO1130 lctA01_STDVERx3

Hypotheses visible moths are more preyed upon have

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Unformatted text preview: of Ottawa 10:34 AM Why is there a change in predominance This brings a about hypotheses -visible moths are more preyed upon - have trees colorations changed? Peppered moth Observation 1: Original museum collections had all white peppered moths and by 1900 traps collected 90% black. Question 1: Why did the moths shift from light to dark morphs? BIO1130 Organismal Biology 54 Université d’Ottawa / University of Ottawa BIO1130 Organismal Biology 10:34 AM Page 18 History of Biology before Darwin Peppered moth Hypothesis 1: Fitness decreased when the moths that were more visible against the background colour of the trees. Null hypothesis1: Fitness remains the same and is not affected by the background. Hypothesis 2: The bark colour of the trees has changed. Null hypothesis 2: The bark colour of the trees has not changed. BIO1130 Organismal Biology 55 Université d’Ottawa / University of Ottawa 10:34 AM Peppered moth Experiment 1: Artificially rear light and dark morphs and place on tree and observe surviv...
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