A)Its product normally functions in DNA repair.
B)Germ-line mutations in this gene are associated with an increased risk for breast and ovarian cancers.
C)Somatic mutations in this gene are associated with an increased risk for ovarian cancer.
D)A,B,and C.
E)None of the above.

A)Nondisjunction of sister chromatids
B)Failure of a chromatid containing a tumor suppressor gene to attach to a spindle fiber during cell division
C)Hypermethylation of the promoter for the gene
D)A,B,and C
E)None of the above

A)Mutant p53 alleles.
B)Mutations carrying a dipyrimidine substitution.
C)Mutations resulting from exposure to UV light.
D)A,B,and C.
E)None of the above.