A Proto- Oncogene Has What Characteristics

Multiple Choice

A proto- oncogene has what characteristics?

A) a gene that inhibits cell division and when functioning normally, leads to cancer progression
B) a gene that inhibits apoptosis and when mutated prevents tumor metastasis
C) a gene that regulates the cell cycle in response to hormones
D) a gene that promotes cell division and when functioning normally, leads to cancer progression
E) a gene that promotes cell division and, when mutated, leads to cancer progression