PSYC 102 Lecture 5: Class 5 - Origins and Ethics
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PSYC 102 Full Course Notes
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Phenotype: the observable characteristics or traits, including things like height, hair colour, number of eyes, language, default behaviours, etc. Phenotypic expression is sometimes highly variable some people are short, tall, some have green eyes, some blue, etc. There are a lot of misconceptions about that genes are and what they do: a single trait is rarely explained by a single gene: there is no. In families, iq correlated a lot between siblings and h2 is around 0. 47 (moderate: third variable problem: sibling share much more than just genes! They read the same books, hangout with eachother, go t same schools, eat the same food, etc: solution #1: manipulate genes. Nature gives is a perfect manipulation identical vs. fraternal twins. Our society (sometimes sadly) gives us perfect manipulation iq of adopted children. Identical twins reared apart have a very high h2 (0. 78) that is barely different from identical twins reaered together.
