A protein is identified that starts a signal cascade leading to the activation of a gene that promotes cell division.This protein is coded for by a

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The protein that starts a signal cascade leading to the activation of a gene that promotes cell division is likely a proto-oncogene. Proto-oncogenes are normal genes that, when mutated or overexpressed, can become oncogenes and promote uncontrolled cell growth and division, leading to cancer. In this case, the protein is promoting cell division, which is a hallmark of cancer, suggesting that it's functioning as a proto-oncogene. Tumor suppressor genes, on the other hand, normally act to prevent cell division and are often mutated or inactivated in cancer. Oncogenes are mutated proto-oncogenes that are constitutively active and promote excessive cell division. Carcinogens are substances that can cause DNA damage and mutations that can lead to cancer.

A Protein Is Identified That Starts a Signal Cascade Leading