
"This cancer cell have a mutation in the place where they're doing their DNA replication, right?" Well, absolutely wrong. Cancer cells have mutations (several of them, since a single mutation cannot be enough to turn a cell into a tumoral cell) in some genes, which are made of DNA. The whole genome (all the cell DNA) replicates when the cell is going to divide (reproduce). This process is very finely genetically regulated, and it's mutations accumulated in some of the regulatory genes of that process that make the cell to lose that precision control of it's proliferation, causing the tumor. https://fountain.fm/episode/dNwNbdvnlEXIzc03OwIO