What role do piRNAs play? Serve as atemplate for transposon silencing. Serve as a guide to mRNA degradation enzymes. Structural component of some ribozymes. Antisense RNA involved in RNA processing. Silences the second X chromosome in human females. Solution (20) a. serve as a template for transposon silencing. The majority of piRNAs are antisense to transposon sequences, suggesting that they serve as templates to silence transposons.