Which of the following is/are necessary for the replication of a satellite virus?
A. Host cell only
B. Prion only
C. Helper virus only
D. Host cell and helper virus
Answer: D
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The satellite regions that distinguish chromosomes 13, 14, 15, 21, and 22 are
A) primarily euchromatin. B) proteins that stabilize the chromosomes. C) located near the centromere. D) repeated genes that encode ribosomal RNAs and proteins.
Which of the listed contraceptive methods is the most effective?
a. withdrawal b. diaphragm c. condoms d. douching e. rhythm method
Robert Koch identified the cause of
A) smallpox. B) anthrax. C) diphtheria. D) AIDS. E) tuberculosis.
You want to study an aspect of the mosaic theory of coevolution and you are looking for a suitable study sys-tem. Which of the following is the most important condition that your study system needs to fulfill?
a. It needs to involve an insect plant interaction. b. It needs to be a case of coevolution. c. The system must be organized as a true metapopulation. d. Coevolution is largely independent in different subpopulations.