RNA

RNA, or ribonucleic acid, is a molecule essential for various biological roles in coding, decoding, regulation, and expression of genes. It is similar to DNA (deoxyribonucleic acid) but differs in several key aspects: 1. **Structure**: RNA is typically single-stranded, while DNA is double-stranded. RNA nucleotides contain ribose sugar, whereas DNA nucleotides have deoxyribose sugar.