Question

The abbreviation hnRNA stands for ______.

विकल्प

• Heterogeneous nucleic Ribose nucleic acid

• Heterogeneous nuclear Ribonucleic acid

• Heterogeneous nucleus Ribose nucleic acid

• Homogeneous nucleic Ribose nucleic acid

Answer 1

The abbreviation hnRNA stands for Heterogeneous nuclear Ribonucleic acid.

Explanation:

It is the primary transcript formed directly from DNA during transcription in the nucleus of eukaryotic cells. It is called “heterogeneous” because the molecules vary significantly in size and “nuclear” because it remains confined to the nucleus until processing is complete. Often referred to as pre-mRNA, hnRNA contains both coding regions (exons) and non-coding regions (introns). Before it can be translated into a protein, it must undergo splicing to remove introns, along with capping and tailing, ultimately becoming a mature mRNA molecule ready to exit the nucleus.