ANT100Y1 Study Guide - Midterm Guide: Evolutionary Anthropology, Postorbital Bar, Genetic Drift
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What do paleoanthropologists seek to determine in their analysis of fossil. The evolutionary history of behaviour in humans and non-human primates. States that all extant and extinct species share a common ancestry, chooses the traits that are passed on and eradicated throughout the evolutionary process. The scientific method is a body of techniques for investigating phenomena, acquiring new knowledge, or correcting and integrating previous knowledge. Singular observations are not enough to prove evolutionary theories, so scientific methods (i. e, measurable evidence) must be implemented. Sexual selection: certain evolutionary traits can be explained by intraspecific (within-species) competition (ie. male birds are colourful, female birds are drab; female selects the most colourful one to mate) The difference is that natural selection traits are based on survival, while sexual selection traits are based on mating habits and preferences. Genetic drift (random changes in a gene pool over time) What is the chemical composition of dna and rna, and what does each.
