Write three things you know about cancer from your own experiences or this class. contingent (con tin gent) - depending on something else; accidental The federal grant is contingent on the district raising a matching sum; if it fails to raise that sum, it will not qualify. If there are 6 chromatids in a cell before interphase how many will there be during metaphase? Why? contingent (con tin gent) - depending on something else; accidental The federal grant is contingent on the district raising a matching sum; if it fails to raise that sum, it will not qualify. Mitosis with Play-Doh! Disregard steps 5 and 6! What if cell division goes wrong? Mitosis is a highly controlled process, but it CAN GO WRONG! Cancer. Cancer is a major consequence of the deregulation of cell division. When cell division goes wrong, cells may either not divide or divide when they are not supposed to. Cancer Cells What causes deregulation? The deregulation of cellular division can come from two sources: Internal factors External factors UV Rays Cell Cycle Checkpoints Why is tanning bad for you? Skin Cancer