class_8_2010_for_web

class_8_2010_for_web - IB35 Human Biological Variation...

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1 IB35 Human Biological Variation Class #8 Topics for today: Genetics Some important terms Gene = a section of DNA that has an effect on the phenotype Allele = an alternative version of a gene Genotype = the genetic constitution of an organism Phenotype = observable properties of an organism observable properties of an organism (genotype + environment) Genome = a term used to refer to all of the genes carried by a single gamete (sperm or egg) Sequence = the specific nucleotide arrangement of a segment of DNA Nucleotide = A, T, C, or G Genetics: An overview Quantitative genetics: how variation is inherited within families (i.e., heritability analyses) Developmental genetics: studies how genes are expressed during development Population genetics: study of the allele frequencies within and between populations Genomics: statistical analyses that compare large sequences of DNA (often between different species) Genetics: An overview • How genes do what they do – Quantitative genetics
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class_8_2010_for_web - IB35 Human Biological Variation...

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