PSY230H5 Chapter Notes - Chapter 7: Mazda Mzr Engine, Phenylketonuria, Assortative Mating
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Five personality traits: the main exception openness to experience, which shows a moderate degree of assortment, conscientiousness and extraversion is the lowest among big 5, low assortment for the big five implies that it is reasonable to assume that dz twins share only. 1st assumption mz and dz twins differ only in their genetic similarity and not in the similarity of their environment and that there is no genetic similarity between parents, then it is possible to estimate heritability from the correlations that show the similarity of mz and dz twins second assumption genetic effects are additive (additive genetic influences): additive genetic influences imply that similarity in phenotypes increases in proportion to the similarity in the genotype, mz twins are twice as similar as dz twins genetically (mz r = 2 * dz r, h2 = 2 x (mzr dzr, [mz r = correlation between mz twins, dz r.
