Psych ch. 4

Genes

biochemical units of heredity that make up chromosomes.

Behavioral genetics

the scientific study of how genetic and environmental factors combine to influence individual differences in behavior

Polygenic traits

several genes work together to make a trait

heterozygous

consisting of 2 different alleles (Aa)

homozygous

2 of the same alleles (AA/aa)

Genetic relatives

biological parents and siblings

environmental relatives

adoptive parents and siblings

Temperament

an individuals emotional reaction

Heritability

the proportion of variation among individuals that can be attributed to genes (the proportion of variety)

Molecular genetics

studies molecular structure and function of genes

molecular behavior genetics

study of how the structure and function of genes interact with our environment to inference behavior

Epigenetic

how the environment effects our genes

epigenetic mark

serve as the biological bridge between "nature" (genetics) and "nurture" (life experiences) Life puts markers on your genes

mylicular behavioral genetics

how outer factors effect us

Evolutionary psychology

study of the evolution of behavior and mind usia principles of natural selection.

Natural slection

traits that are inherited (survival of the fittest)

universal moral grammer

the theory that humans are born with a built-in "instinct" for right and wrong

Prehistoric traits might be _________ from traits today

mis matched

example of mismatched traits

Craving sugar because you needed energy but now it could give you diabetes

Nature and nurture

key to see how far you take your traits

Braid development does _______ end with childhood

Not

If certain abilities are not used they will _____

Fade

Culture

defines enivronment