Nuclear RNA refers to the various types of ribonucleic acid found within the nucleus of eukaryotic cells. This includes messenger RNA (mRNA), which carries genetic information from DNA to the ribosomes for protein synthesis, and ribosomal RNA (rRNA), which is a key component of ribosomes. Additionally, there are transfer RNA (tRNA) molecules that help translate the genetic code into proteins. Nuclear RNA plays a crucial role in gene expression and regulation. It is synthesized during the process of transcription, where DNA is copied into RNA. After processing, nuclear RNA is transported out of the nucleus into the cytoplasm, where it participates in protein synthesis and other cellular functions.