Question

A woman has her personal genome analyzed for the BRCA1 mutation after learning that her father is heterozygous and carries one mutant allele. What is her chance of inheriting the mutant allele from her father?0: men cannot transmit genes affecting breast cancer.a. 50%.b. 100%.c. 25%.d. 75%.

Answer 1

Answer:

a. 50%

Explanation:

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.

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.

Hence, the correct option is a.