Consider the following statements regarding microRNAs (miRNAs):
1. miRNAs are a class of molecules that turn off gene expression at the right time and place.
2. miRNAs facilitate gene silencing by degrading target mRNAs in the cytoplasm.
3. miRNAs are directly involved in the repair of damaged DNA sequences.
Which of the statements given above is/are correct?
1
1 and 2 only
2
1 and 3 only
3
2 and 3 only
4
All of the above