The United States is a country of immigrants. Newly arrived immigrants tend to settle near one another for social comfort and support, thus forming small, semi-isolated populations. The frequencies of the ABO blood types in these populations are often very different from the population of the mother country. This is due to the fact that:
A. the small size of the immigrant population is not a random sample of the mother population
B. mutation rates are higher in the United States
C. natural selection quickly produces changes in the frequencies of ABO blood types
D. none of these
A. the small size of the immigrant population is not a random sample of the mother population
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Many primate societies have clear dominance hierarchies
Indicate whether the statement is true or false
As early cities developed in different parts of the world, people often developed writing systems. In Mesopotamia, the earliest writing system was used primarily for
A. ritual purposes. B. literary works. C. accounting purposes. D. the recording of dynastic histories.
A hypothesis regarding ancestor-descendant relationships that includes a time-scale is called a
a. cladogram. b. phylogenetic tree. c. phylogram tree. d. hypogram tree. e. clarion gram.
Which of the following statements about Inuit child rearing is true?
A) Inuit children do not have formal schooling and are rarely taught to read or write. B) Inuit peoples do not practice enculturation. C) Inuit children are discouraged from asking direct questions and primarily learn experientially. D) Inuit children are taught to be expressive and to consult adults about problems. E) Inuit children have an especially long period of child immaturity in which they have little or no adult responsibilities.