Anatomy The mechanism of anti cancer action of fluoruracil is A Cross linking of double standard DNA and the resulting inhibition of DNA replication and transcription B Cytotoxicity resulting from metabolite that interferes with the production of dTMP C Irreversible inhibition of dihydrofolic acid reductase D Selective action of DNA polymerase 💡 Explanation The mechanism of anti cancer action of fluoruracil is ✓ Correct Answer: C. Irreversible inhibition of dihydrofolic acid reductase