In the absence of retroviruses, reverse transcription may occur in eukaryotes if which of the following is present?
A) promoters
B) transcription factors
C) retrotransposons
D) prions
E) None of these are correct.
Answer: C
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a. biological research b. statistical analysis c. hypothesis building d. biological dogma e. model systems
The transition between the continental shelf and the deep floor is called
a. midocean. b. continental slope. c. shelf break. d. continental margin.
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