damage and disease

• what is the length of of the cell contolled by


  genes
• what do genes do in the body to help with growth


  they ensure that mitosis happens where and when it is needed
• give examples of things that can cause mutations in DNA


  radiation ,certain chemicals and some viruses
• how do mutations in the DNA affect the cell cycle


  it will cause alterations in the genes that control the cell cycle
• what are tumour suppressor genes


  genes that prevent the cell cycle from repeating continuously
• what would happen if tumour suppressor genes mutuate


  the cell cycle will go out of control which could lead to cells going from one round of mitoses right to the next
• what happens if cells replicate too fast in solid tissue


  a tumor will form
• What are proto-oncogenes?


  these also control the cell cycle by telling the cell when to divide
• What are oncogenes?


  these are cancerous genes
• what is the cancerous form of a proto oncogenes


  oncogenes