psychology unit 3c Flashcards
behavior geneticists
study the limits of genetic and environment influences on behavior
environment
every non-genetic influence; nutrition to the things and people around you
how many chromosomes do you get from each parent?
23 from mom
23 from dad
-largest thing
DNA
molecules that compose chromosomes
-2nd smallest thing (coiled up)
genes
biochemical units of heredity that make up the chromosome segments of DNA
-smallest unit (rungs)
Genome
complete set of genetic material in an organisms chromosomes
identical twins
-single sperm & single egg
-similar behaviors
fraternal twins
-2 eggs & 2 sperm
-just like 2 people with the same birthday
any 2 strangers are …
likely to share coincidental similarities
personality is strongly influenced by…
genes rather than home environment
adopted children’s personalities are…
not similar to adoptive parents
adoptive parents influence…
(5 things)
- attitude
- values
- manners
- faith
- politics
natural selection
traits that increase reproduction and survival will be passed on
selective mating
mating with the best of the best to breed an amazing blood line
heritability
variation among individuals that we contribute to genes
-study by behavior and genesis
difference among PEOPLE not
INDIVIDUALS
(looking at it as a whole)
higher the % more controlled
-testing in the same environment
(more things the same)
lower the % less control
-testing in a different environment
(less things the same)
molecular genetics
studies the molecular structure and function of genes
epigenetics
environmental influences on gene expressions that occur without a DNA change
Nature vs Nurture
- genes are self- regulating
- genes react to their environment
older men are attracted to
younger women
young boys are attracted to
older women
interation
effect on environment depends on another factor, heredity
sharing human genome
first 3 months of pregnancy women tend to avoid bitter or strongly flavored foods
