chapter 2 Flashcards
natural selection favors individuals of the species that are best able to _____ and _______.
survive; reproduce
which of the following has/have 23 unpaired chromosomes
both sperm and egg
kevin has blond hair, but both of his parents have brown hair. what might account for kevin’s differing phenotype form both of his parents
dominant-recessive genes
both ____ and ___ are genetic disorders caused by the presence of an extra chromosome
klinefelter syndrome and down syndrome
which of the following characteristics is likely to be exhibited in boys with fragile X syndrome?
mental deficiency
dr. santos designs studies the influence of hereditary and environment on individual differences in human traits and development. her field of study is
behavior genetics
which of the following is a genotype-environment interaction that plays a smaller role in development as children grow older?
passive
louis and his twin sister are entering late adolescence and preparing to go to different colleges. they are likely
to have more difficulty separating from each other and their primary caregiver than do non twin siblings
the G x E interaction involves what two specifically measured factors?
variation in DNA and a specific aspect of the environment
the relative contributions of hereditary and environment are not additive. this means…….
a person’s characteristics and behaviors are a result of a constantly fluctuating mix of gene expression and environment
when does the zygote implant in the lining of the mother’s uterus
about 10-14 days after conception
what is approximately the earliest point that a fetus can survive outside the womb?
six months
teri’s doctor has recommended that she take folic acid throughout her pregnancy. the doctor is most likely trying to prevent which of the following from occurring?
- spins bifida
- fetal neural tube defects
- anencephaly
cocaine exposure during prenatal development is linked to which of the following
- increased likelihood of being in special education and receiving support services
- impaired language development and information processing
- impaired motor development and slower growth rate
during which stage of childbirth does the cervix dilate?
first
hannah is an “easy” child. she rarely cries and is cooperative and pleasant. as a result, she receives much attention and nurturing. this is an example of which type of genotype-environment correlation?
evocative
centeringpregnancy, an innovative prenatal care program, is rapidly expanding in the US and provides
prenatal care in a peer group setting
