If an individual has only one mutated copy of theBRCA1 tumor-suppressor gene, the other copy of theBRCA1 gene cannot act as a regulator of the cell cycle.

Question

Quizplus · Accepted Answer

Having only one mutated copy of the BRCA1 gene means the other, non-mutated copy can still produce the BRCA1 protein and participate in the regulation of the cell cycle, although the risk of dysfunction and cancer is increased.

If an Individual Has Only One Mutated Copy of TheBRCA1