What is the relation between cell cycle disruption and cancer

genetic mutations causing the malfunction or absence of one or more regulatory proteins at cell cycle

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explanation:

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some fungi obtain their nutrients from a living host (plant or animal) and are called most biotrophic fungi have fairly narrow host ranges—they are specialized on a limited called rhizomorphs that allow the fungus to grow from one tree to another. ascospores are formed inside a sac-like structure called an ascus. so your answer is a