<span> A scientific law always applies under the same conditions, and implies that there is a causal relationship involving its elements.</span>
Answer:
The BRCA gene is a tumor-suppressor gene found in the breast; to be more specific, it produces proteins that suppress cancerous activities/abnormal growth in the body. A mutation in a BRCA gene would allow these abnormal growth activities to go unchecked and thus increase the rate of mitosis. Cell cycle checkpoints would significantly be worse at their jobs of checking and correcting for errors during the cell cycle. Tumors would result as well, as cancerous growth continues, and the tumor can become metastatic.
It goes into the bloodstream much faster than a pill would. Anaphylaxis can be deadly and the faster medicine is carried throughout the body, the less likely damage will ensue.