Interplay of Nature and Nurture

Interplay of Nature and Nurture - Chapter 4 Interplay of...

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Chapter 4 Nature : Genetic Influences on Behavior Do genes influence our behavior and mental processes? Genetic studies of nonhuman animal behavior Yes, we have a lot of things influenced by biogenetic structure Genetic studies of human behavior: Studies of twins: Monozygotic (identical) Have same genes, raised in same environment IQ scores very similar Dizygotic (fraternal) Raised in same environment, but not exact same genetic structure Pretty high correlation of IQ scores Studies of adopted children Identical twins raised in different environment still have IQ correlations Molecular genetic mechanisms of inheritance: Genes particular kind of a trait, blueprint telling developing body how to put pieces together Chromosomes DNA : Nucleotides Genes Polymorphic Genes multiple copies of the same kind of gene Dominant Gene only need one for a trait to show up Recessive Gene need one from each parent for trait to show up Polygenic Traits a single trait formed by many genes Ex. IQ no IQ gene, made up of several things
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This note was uploaded on 01/11/2012 for the course PSYCH 101 taught by Professor Staff during the Spring '10 term at South Carolina.

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Interplay of Nature and Nurture - Chapter 4 Interplay of...

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