Answer:
a. 50%
Explanation:
<em>BRCA1 genes is a tumor supressor gene whose harmful mutation can cause hereditary breast ovarian cancer syndrome in both males and females. The BRCA actually stands for breast cancer.</em>
<em>Mutation in BRCA1 gene is heritable and every progeny of a carrier parent irrespective of the sex has a 50% chance of inheriting the trait from such parent, be it from the mother or the father.</em>
Hence, the correct option is a.
It will be C because if a lower energy bonds are formed from breaking higher energy bonds then there will be excess energy to fuel other processes.
<span>a nuclear reaction in which atomic nuclei of low atomic number fuse to form a heavier nucleus with the release of energy.</span>
