Chapter 3 terms Flashcards
Every non-genetic influence, from prenatal nutrition to the people and things around us.
Environment
The study of the relative power and limits of genetic and environmental influences on behavior
Behavior Genetics
Thread like structure made of DNA molecules that contain genes
Chromosomes
A complex molecule containing the genetic information that makes up the chromosomes
DNA
The biochemical units of heredity that make up the chromosomes; a segment of DNA capable of synthesizing a protein
Genes
Twins who develop from a single fertile egg that splits into two, creating two genetically identical organisms.
Identical Twins
Twins who develop from two separate eggs. They are genetically no closer than two brothers or sisters, but they shared a fetal environment.
Fraternal Twins
A person’s Characteristic emotional reactivity and intensity.
Temperament
The portion of variation among two individuals that we can attribute to genes.
Heritability
The effect of one factor (such as environment) depends on another (such as heredity)
Interaction
The subfield of biology that studies molecular structure and function of genes
Molecular Genetics
The study of the evolution of behavior and the mind, using principles o natural selection.
Evolutionary Psychology
The principle that, among the range of inherited trait variations, those that lead to increased reproduction and survival will most likely be passed on to succeeding generations.
Natural Selection
A random error in gene replications that leads to a change
Mutation
In psychology, the biological and socially influenced Characteristic by which people define male and female.
Gender