Lec. 8 (behavior genetics) Flashcards
our codes for life
genes
the basic structural unit of a living thing
cell
the inner area of a cell that houses chromosomes and genes
nucleus
threadlike structure made largely of DNA molecules
chromosome
a spiraling, complex molecule containing genes
DNA
segment of DNA containing the code for a particular protein; determines our individual biological development
gene
“most” cells in your body have a ________
nucleus
T/F: genes DIRECTLY affect behavior
false
genes code for _________
proteins
genes are a short “________” of DNA for a protein
recipe
a complex assortment of genes can ________ behavior
enhance
long-term mood
temperament
temperament can easily be detected in _______
babies
twins that share the exact same genetic structure
identical twins
twins that have different genetic material; essentially siblings with the same birthday
fraternal twins
fraternal twins share ___% of their DNA
50%
if you look at identical twins in different environments, you can study ______ vs. _______
nature vs. nurture (aka behavior affected by environment)
T/F: for fraternal twins, mother’s release 2 eggs
true
T/F: a number of studies compared identical twins reared separately from birth, or close thereafter, and found numerous similarities
true
separated twin similarities examples (4):
- personality, intelligence
- abilities, attitudes
- interests, fears
- brain waves, heart rate
similarities between separated twins implies ________ is a strong influence
nature
adoption studies show that adoptee (who may be biologically unrelated) tend to be ________ from their adoptive parents and siblings DESPITE sharing 100% of their environment.
different
nature =
genetics
nurture =
environment
“emotional excitability”
temperament
distinct temperaments are evident very early and ________ into adulthood
persist
temperament eventually turns into _______
personality
temperament is _______ (not learned)
GENETIC
is personality, similarities, and differences between children and parents NATURE or NURTURE?
both equally
genes and environment INTERACT to determine personality; genes influence behavior which affects environment which affects genes….
Gene-Environment Interaction
environments can cause ______ changes and events
genetics
environments that cause genetic changes explains the subtle differences in ______ twins
identical
gene-environment interaction ex: genes cause different physical appearances which causes ppl to ______ them differently (mr. bean vs. orlando bloom)
treat
study of how environment affects gene expression
epigenetics