Lactose tolerance in a population may be related to a long history of __________
A. malaria
B. smallpox
C. pastoralism
D. hypoxic stress
Answer: C
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What is meant by the "law of competitive exclusion"? a. When one species successfully dominates an ecological niche, it will subdue all other species in the area. b. When two or more species cohabit in the same area, they will each tend to specialize in a subset of foods toallow peaceful coexistence
c. When two closely related species compete for the same niche, one will bring about the other's extinction. d. In a balanced ecological niche, there will be no competition between species. e. Species that begin competing for food supplies will eventually begin to compete for each other's mates as well?competition spreads.
What is the major prerequisite of market exchange?
a. The value of a good is based on supply and demand. b. Exchange is based on currency. c. Exchange occurs within a commercial environment. d. Goods and services are culturally relevant. e. Distribution occurs among a minimum of two parties.
Polynesians believed in a diffuse, incorporeal spiritual power that could lend its power to things or people. This type of supernatural power is called
a. animism. b. mana. c. magic. d. polytheism.
A three-nucleotide sequence in which the DNA's triplet code is written onto the mRNA is called a(n):
A. trilon. B. intron. C. codon. D. anticodon.