What Is This Difference Between Si/miRNAs and PiRNAs

question 99

Multiple Choice

What is this difference between si/miRNAs and piRNAs?

• A)piRNAs are longer than si/miRNAs.
• B)The majority of mammalian piRNAs can be mapped to a small number of huge genomic loci, unlike si/mi RNAs.
• C)The formation of piRNAs does not involve the formation of dsRNA precursors, unlike si/mi RNAs.
• D)Formation of piRNAs does not involve cleavage by Dicer ribonuclease, but instead it depends on the endonuclease activity of the PIWI protein acting on a long, single stranded primary transcript.
• E)All of these are correct.

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