ANTH305 Lecture 2: Evolution
12 Feb 2017
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Document Summary
Lecture 1 and 2: main components of darwin"s theory, species change over time. Lecture 2: evolution and processes: reducing genetic variation, 1. Garden variety: unit of evolution is the population, but unit of selection is the individuals. Artificial selection: humans are conscious, active selective agents. Sexual selection: male- male competition (females pick to mate with top ranking male, female choice (females choose the male) The name we give to a process that occurs in nature. Selective reduction in variation through differential reproductive success. Reproductive success is measured by how many children survive to independence: 2. Differential reproductive success: die before reproducing rs = 0, if you have lots of kids but none of them survive to independence/adulthood rs = 0, the differential between people dosnt have a major impact across generations, male/female. Females- rs can vary from 0 to 10-12+ Males- rs can vary from 0 to 100+
