A) miRNA
B) piRNA
C) lncRNA
D) siRNA
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A) homeotic genes
B) segmentation genes
C) egg-polarity genes
D) morphogens
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A) Proto-oncogenes first arose from viral infections.
B) Proto-oncogenes are mutant versions of normal genes.
C) Proto-oncogenes are genetic "junk".
D) Proto-oncogenes normally help regulate cell division.
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A) It occurs continuously in the cell.
B) It starts when the pathway's substrate is present.
C) It starts when the pathway's product is present.
D) It stops when the pathway's product is present.
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A) by strengthening the binding of the repressor to the operator
B) by weakening the binding of the repressor to the operator
C) by inhibiting RNA polymerase from opening the strands of DNA to initiate transcription
D) by reducing the levels of intracellular cAMP
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A) the amino acid inactivates the repressor.
B) the repressor is active in the absence of the amino acid.
C) the amino acid acts as a corepressor.
D) the amino acid turns on transcription of the operon.
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