The number of different versions of a gene carried in a single normal cell is 2.
A gene is a piece of genetic material that resides in a specific location on a chromosome. By controlling the synthesis of proteins, genes produce their desired effects.
Genes are located in the cell nucleus of eukaryotes, which include plants, animals, and fungi. Small subsets of genes separate from those present in the nucleus can also be discovered in the mitochondria (in mammals) and chloroplasts (in plants). Genes are located in a single chromosome that is free-floating in the cytoplasm of prokaryotes (organisms without a separate nucleus, such as bacteria). Plasmids, which are small extrachromosomal genetic components, are also found in a lot of bacteria.
A futuristic conception of the development of science and medicine using the DNA helix.
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