The inheritance of certain mutations of BRCA1 can make it much more likely that a woman will develop breast or ovarian cancer in her lifetime. In addition to inheriting a BRCA1 mutation, what else must happen for a woman to develop breast or ovarian cancer?

Welcome back everyone. This is our next question. Malignant tumors can grow rapidly invade and destroy nearby normal tissues and spread throughout the body. Which organ in the body is least commonly affected by malignant tumors. A liver B, lung, C, pancreas or D heart. Well, the answer is choice. D heart, the heart is protected by a thick layer of muscle and connective tissue and especially muscle cells are very unlikely to develop m malignant tumors. So because the heart is mainly muscle, it is an unlikely location for those tumors to develop. So our answer choice is choice. D heart for the organ in the body least commonly affected by malignant tumors. See you in the next video.