Mutations in the %26quot;ras%26quot; gene can lead to loss of the ability of the G protien to hydrolyze GTP. The mutant %26quot;ras%26quot; stimulates cell division in the absence of receptor signaling, and is an example of a(an) ________. Mutations producing the BRCA 1 gene product have a decreased ability to repair damaged chromosomes and lead to an 85% incidence of breast or ovarian cancer by the age of 60. BRCA 1 is an example of a(an) ________%26gt;

1. Stability gene; proto-oncogene

2. tumor supressor gene; stability gene

3. proto-oncogene; oncogene

4. oncogene; stability gene

5. tumor supressor gene; oncogene|||BRCA1 is a tumor supressor gene… so none of your answers match.

Ras is an oncogene|||3