Question

small rnas can regulate gene expression. one type, called micro rna (mirna), acts by binding directly to multiple choice mrna to prevent translation. mrna to prevent transcription. trna to prevent translation. trna to prevent transcription.

Explanation:

Micro - RNAs (miRNAs) are small non - coding RNAs that bind to messenger RNA (mRNA). Their function is to prevent the translation process of mRNA into proteins, not transcription. Transfer RNAs (tRNAs) are involved in translation but miRNAs do not bind to them for regulation.

Answer:

A. mRNA to prevent translation.