Question

It is established that RNA is the first genetic material. Explain giving three reasons.

Answer 1

Hint: Messenger RNAs can hold genetic information while tRNA and rRNA are able to translate genetic information into proteins.

Complete Answer:
- Ribonucleic acid (RNA) is a polymeric molecule that is important for the decoding and coding, expression of genes, and regulation. Nucleic acids are RNA and DNA. Nucleic acids form one of the four main macromolecules necessary for any known life type along with proteins, carbohydrates, and lipids.
- Certain RNA molecules are involved in cells through catalyzes of biological reactions, genetic expression regulation and sensing and transmitting cellular signal responses. Protein synthesis is a universal mechanism in which RNA molecules guide protein synthesis to ribosomes. It is one of the active processes.
- RNA is a genetic molecule with immense capability. It had to conduct inherited processes on its own. Some RNAs can also function as a genetic code enzyme themselves. RNA is now sure to be the first heredity enzyme, and so all the main ways of stocking and expressing genetic information have arisen since DNA was adopted.

In cells, RNA is the first genetic material because:
1. RNA is capable of preserving and catalyzing genetic information.
2. The RNA has developed in the basic processes of life including metabolism, translation, splicing, etc.
3. It continues to repeat itself.

Note: RNA is a high molecular weight complex compound that works in synthesis of cell protein and replaces DNA as a genetic code carrier for certain viruses. RNA consists of phosphodiester bonds, which form chains of varying lengths, of ribose nucleotides attached to it. Adenine, guanine, cytosine and uracil are the nitrogen bases in RNA.