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taxonomy, classification

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Western University
Anthropology 1020E
Andrew Nelson

KEY POINTS FROM TUESDAY Refinement of the definition of evolution -Change of allele frequencies over time within a population -Therefore the population is the unit of evolution and the individual is the unit of selection What factors lead to allele frequency changes in population? -Migration -Mutation -Non-random mating -Genetic drift -Natural selection (editor) hanrdy-weinberg prinicople of genetic equillbriam -under conditions of no migration, no mutation, random mating ^^^ and the resultant genotyoe frequencies will not change form generation to generation -this is an explicit model allowing us to highlight the factors leading to evolutionary change and to model and predict frequencies -p and q = allele frequencies -p2+2(pq)+q2 = genetic frequencies microevolution – allele feq changes within a species macroevolution – large scale allele freq changes leading to new species speciation – the process by which new species appear TODAY Principles of taxonomy: the science and theory of identifying and naming species Classification: the practice of arranging specimens into biological type or species -No single taxonomy or way of classifying things -animalia classification , cordata , vertebrates, HUMANS: kingdom: animalia phylum: chordata subphylum: vertebrata class: mammalia – warm blooded order: primates genus: homo species: sapiens – expanded cranial capacity Goals of Taxonomy: 1)
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