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What is a virus, the origins of viruses are unclear, some may have envolved from plasmids-pieces of DNA that can move between cells- while others may have evolved from bacteria.
Virus consist of two or three parts; Gene, DNA and RNA
1. Gene- is a locus (or origin) of DNA that encodes a functional RNA or protein product, and is the mole cular unit of hereditary.
2. DNA (Dexoyribonucleic acid) is a molecule that carries most of the genetic instructions used in growth,development.functioning and reproduction of all living organisms and many viruses.
3. RNZ (Ribonule acid) is a polymeric molecule implicated in various biological roles in coding,decoding,regulation and expression of genes.