An allele known as BRCA1 is often found in women with breast and ovarian cancer.However,some women develop these cancers and do not have the BRCA1 allele.In addition,some women who have BRCA1 never develop breast or ovarian cancer.How can this be explained?

Question

Quizplus · Accepted Answer

Genetics alone cannot always determine whether cancer will develop. Other factors, such as environmental factors and individual lifestyle choices, can also play a role.  Additionally, there may be other genes or genetic variations that contribute to the development of breast and ovarian cancer.

An Allele Known as BRCA1 Is Often Found in Women