a. What are BRCA genes? What job do these genes normally do in the human body? Citation required. b. Given your understanding of meiosis and inheritance explain the following statement: "If either your mother or your father has a BRCA1 or BRCA2 gene mutation, you have a 50% chance of having the same gene mutation." c. If you inherit a mutated version of a BRCA gene, does this mean you are guaranteed to develop cancer? What other changes must occur for cancer to develop? Citation required.

Please help with answering this Cancer Biology question. Detailed answers are welcome to aid in understanding.

1. What role does a patient's genetics have in their symptoms of muscular dystrophy? What causes various mutations to cause distinct symptoms? (two to three sentences) (Think about why various mutations in different genes cause different illnesses.)2. What can family history teach you about a patient's muscular dystrophy inheritance and, hence, genetic basis? (two to three sentences)3. The X-chromosome contains the mutation that causes Duchenne Muscular Dystrophy (DMD). Explains how this impacts DMD inheritance and why DMD patients are disproportionately male. (two to three sentences)

Please help me with the question below - it is based on genomics/developmental biology. The solution should be as brief but concise as possible, while still answering the given question completely.