<prompt> Mechanism of action of vincristine in the treatment of all isInhibition of topoisomerse II to cause breaks in DNA standardsAlkylation and cross linking DNA standardsInhibition of DNA mediated RNA synthesisInhibition of polymerization of tubulin to form microtubes  <response>: Ref-KDT 6e 824,825 Vincristine is a chemotherapy drug that belongs to a group of drugs called vinca alkaloids. Vincristine works by stopping the cancer cells from separating into 2 new cells. So, it stops the growth of the cancer by polymerization 