In the worm C.elegans,lin-4 acts as a negative regulator of lin-14.Which statement about lin-4 is true?
A) It is a transcription factor.
B) It encodes a microRNA.
C) It demethylates DNA.
D) It methylates DNA.
E) It is a positive regulator.

Question

Quizplus · Accepted Answer

The statement mentions that lin-4 acts as a negative regulator of lin-14. Negative regulation typically involves inhibition of gene expression. This suggests that lin-4 is likely a post-transcriptional regulator, such as a microRNA, that binds to the mRNA of lin-14 and inhibits its translation. Therefore, choice B is the best answer as it suggests lin-4 encodes a microRNA.

In the Worm C