When uncontrolled, the cell cycle becomes cancer. It forms lumps called..?

Tumours are groups of abnormal cells that form lumps or growths. They can start in any one of the trillions of cells in our bodies.

Explanation: (:

It forms lumps called tumors.

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explanation:

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genetic variation can be caused by mutation (which can create entirely new alleles in a population), random mating, random fertilization, and recombination between homologous chromosomes during meiosis (which reshuffles alleles within an organism's offspring).