If Mutations Lead to Cancerous Cells, Why Don't Most Point

Multiple Choice

If mutations lead to cancerous cells, why don't most point mutations immediately make a cell cancerous?

A) Cancer-causing changes are accompanied by compensating cancer-reducing changes.
B) Point mutations are not passed from parent to daughter cells in cell division.
C) All point mutations occur in germ-line cells, which do not become cancerous.
D) Multiple mutations are required to make a malignant cancer cell.
E) Point mutations rarely occur in genes.