試題詳解

24. Which of the following is WRONG concerning BRCA1 gene?
(A)BRCA1 gene is considered to be a tumor-suppressor gene.
(B)The wide-type BRCA1 allele protects against breast cancer.
(C)The mutant BRCA1 allele is recessive.
(D) The BRCA1 protein appears to function in the cell’s DNA damage repair pathway.
(E)A woman who inherits two mutant BRCA1 allele has a 60% probability of developing breast cancer before the age of 50.