Which of the following will not cause a greater penetrance of the BRCA 1 or BRCA 2 gene mutation?

Question

Quizplus · Accepted Answer

A common genetic mutation for BRCA1 or BRCA 2 will not cause an increase of gene penetrance. Common gene mutations actually have a lower penetrance than a rare genetic mutation. Many environmental factors including hormones, radiation, and tobacco use are linked to increase cancer risk. Rare genetic mutations have a greater penetrance than a common gene mutation. Young women who are BRCA positive women are at a greater risk for developing a radiation induced cancer.

Which of the Following Will Not Cause a Greater Penetrance