PSYC 1000 Chapter Notes -Twin, Behavioural Genetics, Prenatal Nutrition
Document Summary
Behaviour genetics study of the relative power and limits of genetic and environmental influences on behaviour. Environment every non-genetic influence from prenatal nutrition to people and things around us. Dna a complex molecule containing the genetic information that makes up chromosomes. Human body has 46 chromosomes 23 from mother, 23 from father. Chromosomes threadlike structures made of dna molecules that contain genes. Genes the biochemical units of heredity that make up the chromosomes; segments of dna capable of synthesizing a protein. Genes can be either active (expressed) or inactive. Genome the complete instructions for making an organism, consisting of all the genetic material in that organisms chromosomes. Humans share 99. 9% of the same dna. Most of our traits are influenced by genes. Twins and adoption studies to tease apart the influences of environment and heredity, behaviour geneticists would need to design 2 types of experiments. 1 would control the home environment while varying heredity.