The most immediate and important treatment needed to prevent death in cholera victims is ________.
A. water and electrolyte replacement
B. surgery
C. antitoxin
D. broad-spectrum antimicrobials
Answer: A
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What is the frequency of the a allele in the butterfly population?
A) 0.16 B) 0.04 C) 0.40 D) 0.64 E) 0.40
Today, the fossil record
A. can be dated reasonably well only with uranium-238. B. can be dated precisely, to within a single year, using DNA hybridization. C. can be dated precisely, to within a single year, using radioactive isotopes. D. can be dated reasonably well using a variety of radioactive isotopes with known half-lives. E. can be dated only in terms of how layers relate to each other (i.e. older layers are below younger layers); no actual dates can be estimated.
Arrange the following in order from most general to most specific
1 natural selection 2. microevolution 3. intrasexual selection 4. evolution 5. sexual selection A) 4, 1, 2, 3, 5 B) 4, 2, 1, 3, 5 C) 4, 2, 1, 5, 3 D) 1, 4, 2, 5, 3
When a gene has the ability to influence several different aspects of the phenotype of an organism, this is referred to as
A. polygenic inheritance. B. pleiotropy. C. multiple alleles. D. lack of dominance.