PSYCH 2B03 Study Guide - Quiz Guide: Autonomic Nervous System, Twin Study, Phenotype
17 Dec 2020
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How much genetics influence who we are as a person compared to our experiences. 3 components to the factors that influence similarities and differences among people. Shared environmental factors - external conditions that people share. Non-shared environmental factors - external conditions experienced differently (different parenting or different friends) Eg, height, hair color, eye color, iq, personality. Monozygotic (mz - identical) - shares 100% of genes. Dizygotic (dz - non-identical or fraternal) - shares 50% of genes. No more similar in genotype than any two siblings. They only happen to be formed at the same time. If genotype is everything then mz raised apart will have 1. 0 correlation. Family studies : calculate the similarity of various numbers of families sharing different amount of genetic material. a. b. c. First degree: parents to children, children to siblings. Adoption studies : comparing phenotypic similarities of adopted children with their biological parents and adoptive parents.
