This aversity to double-stranded RNA means short hairpins can be used to knock out the messengers, thus nullifying the signal from the underlying gene.
After reviewing the letters from the students, the College Board publicly admitted their mistake a few weeks later and nullified the question for all test takers.
But he had just heard something from Standish which, while it justified these surmises about Will, offered a means of nullifying all danger with regard to Dorothea.