Cancer is often the results mutations that involve ________.

Question

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Cancer is often the result of mutations that involve proto-oncogenes becoming oncogenes. Proto-oncogenes are normal genes that regulate cell growth and division, but when they mutate and become oncogenes, they stimulate excessive and uncontrolled cell growth, leading to cancer. Mutations in the genes in the mitotic spindle may also contribute to cancer development, but they are not as common as proto-oncogene mutations. Option B is incorrect as oncogenes are already the mutated versions of proto-oncogenes. Option D is partially correct as both proto-oncogenes and oncogenes mutations can contribute to cancer, but option A is more accurate.

Cancer Is Often the Results Mutations That Involve ________