ANHB1101 Lecture Notes - Lecture 7: Peppered Moth, Herbicide, Carl Linnaeus
5 Sep 2018
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Evolution helps us understand: similarities and diffs among species, distribution of species, species adaptation and weaknesses, human population challenges. Peppered moth example of selective pressures, adaptations and natural selection. Linnaeus fact=fixity of species ie. no evolution. All were the same as they are today. Course=scale of nature proposed we all moved up the scale and change into the next step on the ladder. Proposed selective pressures for change in animals to meet demands of new environment. Individuals would change characteristics and pass them on to offspring. Populations increase faster than the food supply so some would survive and some would die (struggle for survival) influenced darwin (malthus) Lyell current geological events were happening a long time ago same forces. Wallace came up with the same idea of mechanism of natural selection. They published one together on the evolution of natural selection. Intrinsic increase in number of individuals within a species: competition for limited resources, survival of the fittest.
