The lightly shaded countries have diversified export bases. The darkly shaded countries depend on ________ for foreign exchange (export earnings)
A) one or two commodities
B) the service sector
C) energy resources
D) tourism
E) both a and b
Answer: A
Biology & Microbiology
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Which of the following statements is false
concerning X chromosome inactivation? a. It is an accident of evolution. b. It is an example of dosage compensation. c. It is a gene control mechanism. d. Normal development of female embryos depends on it. e. It does not occur in males.
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Explain how IS elements produce target-site duplications when they move
What will be an ideal response?
Biology & Microbiology
The signal sequence that targets a polypeptide to the rough ER is rich in _______ amino acids.
a. positively charged b. negatively charged c. hydrophilic d. hydrophobic
Biology & Microbiology
Which of the following statements is true of viruses?
What will be an ideal response?
Biology & Microbiology