Unit 3: Nature, Nurture, and Human Diversity

• Genes are probabilistic, not deterministic
• Behavioral genetics 


  study influence of genetic factors on behavioral traits
• Identical (monozygotic) twins are 100% the same genetically
• Fraternal (dizygotic) twins share about half their genes.
• Twin studies involve comparing identical and fraternal twins reared together and apart to estimate the relative importance of nature versus nurture.
• Parenting plays a large role in attitude, values, manners, beliefs, faith, and politics
• Epigenetics


  Study of heritable changes in gene expression which do not involve modifications to DNA sequence
• Social scripts


  Culturally modeled guide on how to act in society