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34 Cards in this Set
- Front
- Back
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height and color of eyes are |
phenotypes |
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human ______ come in 23 matching pairs |
chromosomes |
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a ______ is a segment of DNA along length of chromosome |
gene |
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During mitosis |
chromosomes copy themselves |
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when sperm and ovum unite at contraception: |
a zygote forms |
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in a male |
the cells from which sperm arise are produced continuously throughout life |
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23rd pair of chromosomes is XY |
male |
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fraternal twins results from |
the release and fertilization of two ova |
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a zygote that separates into 2 clusters of cells instead of one |
identical twins |
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If alleles from both parents are _____, then child is ______ |
differ, heterozygous |
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which of following is recessive characteristic? |
red hair |
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being negatively affected by X-liked disorders in male bc |
the Y chromosome lacks many corresponding genes to override those carried on X |
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21st chromosome malfunction |
down syndrome |
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sex chromosome disorders show that |
females who are missing an X often have trouble with spatial relationships |
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couple concerned about having a baby unsuccessfully |
genetic counseling |
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women is given hormones that stimulate ripening of several ova: |
in vitro fertilization |
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ethical concern regarding use of reproductive technologies |
in vitro "sex sorter" method could lead to parental sex selection |
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sample of fetal blood, permitting diagnosis of hemophilia and sickle cell anemia |
fetoscopy |
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Prenatal diagnosis should not be used routinely except for |
maternal blood analysis |
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most adopted kids |
become well-adjusted adults |
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_____ million Americans are affected by poverty |
46 |
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poverty rate for single mothers with preschool children |
50 |
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effects of neighborhoods suggest |
affect well-being of children and adults |
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people hold different beliefs and customs from those held by larger cultures in |
subcultures |
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extended families |
more black than white adults have relatives other than their own children in the same household |
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For blacks, living within an extended family tends to produce |
improved child rearing and reducing stress |
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extended-family arrangements |
place more emphasis on cooperation and moral and religious values |
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collectivist societies |
define themselves as part of a group |
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Public policies safeguarding _____ lag behind policies for _____ |
children and youths; the elderly |
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Minimum income guaranteed to Americans age 65 and older from SS is |
below the poverty line |
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senior citizens today are |
more likely than other age groups to be among the near poor |
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growing number of researchers regard question of how much heredity and environment contribute |
unanswerable |
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twin studies of schizophrenia |
consistently yield high heritability's, around .80 |
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Bc the environments of most twin pairs are less diverse than those of the general population, it's difficult to |
generalize heritability findings to the whole population |
