Modules 10-12 (lecture 4) Flashcards
Behavior Genetics
The study of the relative power and limits of genetic and environmental influences on behavior.
Heredity
The genetic transfer of characteristics from parents to offsprings
Environment
Every nongenetic 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; small 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 (monozygotic) Twins
Individuals who developed from a single fertilized egg that split in two, creating two genetically identical organisms.
Fraternal (dizygotic) Twins
Individuals who developed from separate fertilized eggs. they are genetically no closer than ordinary siblings, but shared a prenatal environment.
Temperament
A person’s characteristic emotional reactivity and intensity.
Heritability
The proportion of variation among individuals in a group that we can attribute to genes. The heritability of a trait may vary, depending on the range of populations and environment studied.
Interaction
The interplay that occurs when the effect of one factor (such as environment) depends on another factor (such as heredity)
Molecular Genetics
The subfield of biology that studies the molecular structure and function of genes
Molecular Behavior Genetics
The study of how the structure and function of genes interact with our environment to influence behavior
Epigenetics
“above” or “in addition to” (epi) genetics; the study of the molecular mechanisms by which environments can influence genetic expression (without a DNA change)
Evolutionary Psychology
The study of the evolution of behavior and the mind, using principles of natural selection
Natural Selection
The principle that inherited traits that better enable an organism to survive and reproduce in a particular environment will (in competition with other trait variations) most likely be passed on to succeeding generations
Mutation
A random error in gene replication that leads to a change
Social Script
A culturally modeled guide for how to act in various situations
Culture
The enduring behaviors, ideas, values, and traditions shared by a group of people and transmitted from one generation to the next