Nature vs. Nurture - Exam #1 W 2/6 in class Review T 2/5...

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Unformatted text preview: Exam #1 W 2/6 in class Review T 2/5 from 5-7pm in PAI 3.02 Phenotype Genotype Dominant Recessive Phenotype Genotype Genes code for proteins (or RNA). These gene products give rise to traits It is rarely this simple. What makes us who we are? Nature and Nurture Based on Nature via Nurture by Matt Ridley (2003) Imprinting: exposure to movement (environment) sets mother X/Y chromosomes in humans: genes = traits Twin studies have been used to determine the heritability of various traits. Types of twins: http://pennhealth.com/health_info/pregnancy/000199.htm Twin studies have been used to determine the heritability of various traits, but there are some caveats: How many twins have been studied? How different are the environments? Correlation of weight (BMI) % Biological siblings 34 Parents and children living together 26 Identical twins reared together 80 Identical twins reared apart 72 Fraternal twins reared together 43 Adopted children and parents 4 Unrelated children living together 1 *But food preference shows little genetic correlation Correlation of weight and relatedness The nature of environmental influences on weight and obesity: A behavior genetic analysis. Grilo, Carlos M.; The nature of environmental influences on weight and obesity: A behavior genetic analysis....
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Nature vs. Nurture - Exam #1 W 2/6 in class Review T 2/5...

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