PSY 100 Lecture Notes - Lecture 8: Collectivism, Secondary Sex Characteristic, Spermarche
Document Summary
Behavior genetics the study of the relative power and limits of genetic and environmental influences on behavior. Environment every non genetic influence, from prenatal nutrition to the people and things around us. Chromosomes threadlike structures made of dna molecules that contain the genes. Dna (deoxyribonucleic acid) a complex molecule containing the genetic information that makes up the chromosomes. Genes the biochemical units of heredity that make up the chromosomes; segments of dna capable of synthesizing proteins. Genome the complete instructions for making an organism, consisting of all the genetic material in that organism"s chromosomes. Identical twins develop from a single fertilized egg that splits in two, creating two genetically identical organisms. Fraternal twins (dizygotic twins) develop from separate fertilized eggs. They are genetically no closer than ordinary brothers and sisters, but they share a prenatal environment. Temperament a person"s characteristic emotional reactivity and intensity. Heritability the proportion of variation among individuals that we can attribute to genes.
