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Biology for Medical Exams
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Which of the following is capable of changing a proto-oncogene into an oncogene?
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A
Virus
💡 Explanation:
Viruses can convert proto-oncogenes into oncogenes through several mechanisms: by introducing viral oncogenes (v-onc) that are homologous to cellular proto-oncogenes, by inserting near proto-oncogenes and causing their overexpression, or by carrying mutated versions. While radiation can also cause this conversion, viruses are particularly efficient at it.