Biology 9700 · AS & A Level · Replication and division of nuclei and cells

Replication and division of nuclei and cells — practice question

The statements concern genes and proteins linked to breast cancer. • The protein produced by the BRAC1 gene prevents breast cancer cells from growing. • The protein produced by the p53 gene reduces tumour growth. Which pairing of genes is most likely to cause breast cancer?

  • ABRAC1: mutated; p53: mutated
  • BBRAC1: mutated; p53: normal active
  • CBRAC1: normal active; p53: mutated
  • DBRAC1: normal active; p53: normal active

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