BIOA01H3 Chapter Notes - Chapter 17: Allele Frequency, Gene Flow, Jacques Louis Randon

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Published on 16 Dec 2011
School
UTSC
Department
Biological Sciences
Course
BIOA01H3
Professor
c

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Document Summary

Means of natural selection focused biologists attention on great diversity of organisms: darwin made two major points:  the occurrence of something in different forms, in particular: describe by percentage or frequency of each y causes of phenotypic variation, genetic differences between individuals, diff in env. Interaction between genetics and the environment y genetic and phenotypic variations may not be perfectly correlated. y diff genotypes can have the same phenotype y same genotype can have diff phenotype.  traits that vary quantitatively will respond to artificial selection only if variation has genetic basis: genetic causes of variation can also be identified by analyzing genealogical pedigrees.  genealogical: of or relating to the study or tracing of lines of family descent y what generates genetic variation: 2 potential sources.  production of new alleles y arise from small scale mutations in dna.

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