A proto-oncogene has what characteristics?
◦ a gene that promotes cell division and when functioning normally, leads to cancer progression
◦ a gene that inhibits apoptosis and when mutated prevents tumor metastasis
◦ a gene that regulates the cell cycle in response to hormones
◦ a gene that inhibits cell division and when functioning normally, leads to cancer progression
◦ a gene that promotes cell division and, when mutated, leads to cancer progression