Eukaryotes have three nuclear RNA polymerases. The primary function of RNA polymerase II is transcription of _____
A) only rRNA-coding genes
B) only tRNA-coding genes
C) both rRNA- and tRNA-coding genes
D) protein-coding genes
Answer: D
Biology & Microbiology
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Crustaceans have paired antennae
Indicate whether the statement is true or false
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The failure of chromosomes to separate during
mitosis or meiosis is called a. genetic displacement. b. trisomy. c. crossing over. d. nondisjunction. e. disjunction.
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Refer to Figure 42-2. The surface labeled 4 is:
a. dorsal. b. ventral. c. medial. d. lateral. e. frontal
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