In the roundworm C. elegans, the lin- 4 gene produces an RNA that forms a hairpin structure. One of the strands in the double- stranded region of lin- 4 hairpin RNA is complementary to the mRNA of a protein- coding gene, lin- 14. Predict the effect of expressing lin- 4 RNA during development.
A) The lin- 14 expression will rise when lin- 4 expression begins.
B) The lin- 4 RNA will bind the promoter of the lin- 14 gene, destroying the lin- 14 gene.
C) The lin- 4 RNA will bind to the enhancer of lin- 14, increasing lin- 14 transcription.
D) The lin- 14 expression will fall when lin- 4 expression begins.
Correct Answer:
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