Genetics and Stuff

the study of relative power and limits of genetic and environmental influences on behavior

every non-genetic influence, from prenatal nutrition to the people and things around us

threadlike structures made of DNA molecules that contain the genes

a complex mmolecule containing the genetic information that makes up the chromosomes

• the biochemical units of hereditary that make up the chromosomes
• a segment of DNA capable of synthesizing a protein

the complete instructions for making an organism, consisting of all the genetic material in that organism's chromosome

twins who develop from a single fertilized egg that splits in two, creating two genetically identical organisms

twins who develop from separate fertilized eggs, genetically no closer than brothers and sisters, but share a fetal environment

a person's characteristic emotional reactivity and intensity

• Difficult Babies
• Easy Babies
• Slow-to-warm-up Babies

the proportion of variation among individuals that we can attribute to genes

the interplay that occurs when the effect of one factor (such as environment) depends on another factor (such as heredity)

the subfield of biology that studies the molecular structure and function of genes