Question 1
Many miRNAs that function in RNA interference are transcribed from:
◦ gene promoters.
◦ the noncoding strands of exons in protein-coding genes.
◦ introns of protein-coding genes.
◦ 5′ or 3′ UTRs of protein-coding genes.
◦ coding regions of genes, but are edited to smaller fragments.
Question 2
One way piRNAs are different from miRNAs is that piRNAs:
◦ are double-stranded.
◦ function in the nucleus.
◦ function in somatic cells.
◦ are shorter than miRNAs.
◦ do not interact with proteins, but function alone.
