More than 50 percent of cohabitations in the United States are between unmarried opposite-sex couples
a. True
b. False
Indicate whether the statement is true or false
False
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The human leukocyte antigen (HLA) protein must be typed prior to organ transplantation because failure to match phenotype can result in the ____________
a. host's white blood cells attacking the donor organ b. host's red blood cells attacking the donor organ c. host's white blood cells becoming infected d. host's red blood cells becoming infected
Once humans evolve a resistance to a disease-causing organism, what occurs?
a. That organism becomes extinct. b. Humans become completely immune to that organism. c. Resistance to the organism becomes part of the human genome. d. The organism begins evolving to counteract host resistance.
In Western societies, the standards for artistic completeness and mastery are maintained in large part by critics, specialists, and experts.
Answer the following statement true (T) or false (F)
What is the name of the custom by which a widower marries the sister of his deceased wife?
A. serial polyandry B. levirate marriage C. sororate marriage D. filial marriage E. fraternal marriage