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Peppered Moth Story

Peppered Moth Story. Practical 1. Learning objectives:. By the end of the lesson you should be able to: Describe the process of Natural Selection in the Peppered Moth. Introduction. Lichens. Light. In unpolluted areas bark is covered with ________________ and is _________ in colour.

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Peppered Moth Story

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  1. Peppered Moth Story Practical 1

  2. Learning objectives: • By the end of the lesson you should be able to: • Describe the process of Natural Selection in the Peppered Moth.

  3. Introduction Lichens Light • In unpolluted areas bark is covered with ________________ and is _________ in colour. • In polluted areas lichens are ________and bark is covered with ______ and is _______ in colour killed soot dark Light or dark • Peppered moths can be either _________________in colour • They feed at night and rest during the day on ____________ bark • Birds prey on the moths during the _______ day

  4. Aim • To illustrate the role of camouflage in natural selection

  5. Method • Cut out several or all of the moths. You must not leave white edges. • Stick different numbers of each moth onto each background of the bark sheet and enter the numbers in the “present” columns of the result table. • Ask another person in the class to count the number of moths seen on each background, but only show your sheet to the other person for 10 seconds! • Enter the results in the table

  6. Results

  7. Interpretation • Which moths would be most likely to be preyed upon in • A) unpolluted areas • B) Polluted areas • Which moth would be most likely to survive in • A) unpolluted areas? • B) Polluted areas Dark Light Light Dark

  8. Conclusion • What do these results suggest is the role of camouflage in natural selection? • How can the results be made more reliable? The moths which are camouflaged would survive Evaluation By polling results from other groups

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