What is the difference between proto-oncogenes and tumor suppressor genes? what is the difference between proto-oncogenes and tumor suppressor genes? proto-oncogenes are modified via mutation to stimulate normal cell growth and division and tumor suppressor genes allow uncontrolled growth proto-oncogenes are modified via mutation to allow uncontrolled growth and tumor suppressor genes stimulate normal cell growth and division proto-oncogenes prevent uncontrolled growth and tumor suppressor genes stimulate normal cell growth and division proto-oncogenes stimulate normal cell growth and division and tumor suppressor genes prevent uncontrolled growth

Proto-oncogenes stimulate normal cell growth and division and tumor suppressor genes prevent uncontrolled growth

Explanation:

Both gene types play a role in cancer development.

Proto-oncogenes are genes responsible for the control of normal cell growth. They encode for proteins that induce growth and proliferation of the cell. When mutation occurs, proto-oncogenes become oncogenes and contribute to the development of cancer. As a consequence, the cell cannot control its growth.

On the other hand, tumor supressor genes normally have repressive effect on the cell growth (promote cell death-apoptosis). When a mutation in this gene occurs, this gene loses its function an that also leads to uncontrolled cell proliferation.

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