Why dna is more stable than rna

DNA encodes all genetic information, and is the blueprint from which all biological life is created. In the long-term, DNA is a storage device, a biological flash drive that allows the blueprint of life to be passed between generations 2.

RNA functions as the reader that decodes this flash drive. This reading process is multi-step and there are specialized RNAs for each of these steps. Below, we look in more detail at the three most important types of RNA.

The nitrogen bases in DNA are the basic units of genetic code, and their correct ordering and pairing is essential to biological function. The four bases that make up this code are adenine A , thymine T , guanine G and cytosine C. Bases pair off together in a double helix structure, these pairs being A and T, and C and G.

RNA molecules, by comparison, are much shorter 3. Eukaryotic cells, including all animal and plant cells, house the great majority of their DNA in the nucleus, where it exists in a tightly compressed form, called a chromosome 4. This squeezed format means the DNA can be easily stored and transferred.

The unpaired regions form structures such as hairpin loops, bulges and internal loops, which may be of functional importance Figure 7. Examples include Rho-independent terminator stem-loops and the tRNA cloverleaf. The functional form of single-stranded RNA molecules, just like proteins, typically require a specific tertiary 3D structure. RNA contains the unmethylated form of the base thymine called uracil.

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Home QnA Home why is dna more stable than rna? Get answers from students and experts Ask. Shalini Chouhan 25th Jan, Answer later. Khushi 25th Jan, It also plays a role in the alteration of the sequence of a nucleotide of the genes. Structure of DNA. RNA stands for ribonucleic acid.

It is present in living cells. RNA has a high molecular weight.