Which of the following is true of chorionic villus sampling?
A. it is a method for discovering genetic defects in a mother through the sampling of amniotic fluid
B. it consists of a sample composed of placental tissue, which is derived from the embryo
C. it involves analyzing a cell that has been removed from an early embryonic state in the laboratory
D. it is usually performed between 24 and 28 weeks of gestation
B. it consists of a sample composed of placental tissue, which is derived from the embryo
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Descent from a common ancestor through males only is called
a. patrilineal descent. b. matrilineal descent. c. bilateral descent. d. endogamy.
Tarsiers are found in:
A. Southeast Asia B. Central Africa C. Central America D. Southern India
Parapithecids were tarsierlike
Indicate whether the statement is true or false
A centralized, multilevel political unit characterized by a bureaucracy that acts on behalf of the ruling elite is called a:
a. state. b. composite band. c. tribe. d. chiefdom.