Why Are BRCA1 and BRCA2 Considered to Be Tumour-Suppressor Genes

question 18

Multiple Choice

Why are BRCA1 and BRCA2 considered to be tumour-suppressor genes?

• A) Their normal products participate in repair of DNA damage.
• B) The mutant forms of either one of these prevent breast cancer.
• C) The normal genes make oestrogen receptors.
• D) They block penetration of breast cells by chemical carcinogens.

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