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Chapter 6 Powerpoint

Chapter 6 Powerpoint - Chapter SixPersonality Genetics...

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Chapter Six- Personality & Genetics
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Behavioral genetics Behavioral genetics- explain how individual differences in behavior are passed from parent to child & shared by biological relatives examines the way inherited biological material--the genes --can influence patterns of behavior
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Human genome contain approximately genes on 23 pairs of chromosomes Most genes in a human genome are the same for all humans A small number of genes (<1%) are different for different individuals Genes
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Controversy Eugenics & cloning Careful in addressing implications of genetics research
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Heritability Height 90% of the variability in height is associated with genetic differences; 10% environmental differences (nutrition, social class, etc.) *90% refers to group - NOT individual person
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Heritability Heritability quotient- the proportion of variability in a given characteristic that can be attributed to genetic differences between people For height, the heritability quotient is 90%
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Twin Studies Twin studies Monozygotic (MZ) twins – identical twins Dizygotic (DZ) twins –fraternal twins two eggs Heritability = 2(r mz - r dz )
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Adoption Studies
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