Mutation in the genes may lead to uncontrollable and rapid division of the cells forming a mass or tumour. This mass is known as cancer. A cancer cell is different than the normal cell because they metastise that is move from one place to another through lymphatic system and the bloodstream and are highly invasive.
Normal cells attain cancerous nature when the normal genes goes through mutation which is the alteration in the nucleotide sequence.These mutation occurs due to exposure to UV rays, genetic make up or other radiations.
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