Q. The genes causing cancer are
Solution:
Solution:
The physical, chemical or biological agent may induce the transformation of normal cells into a neoplastic cancerous cell. These agents are known as carcinogens. Neoplastic transformation can be caused by ionizing radiations like X-rays and gamma rays and non-ionizing radiations like UV, which causes damage to the DNA. The major cause of lung cancer was identified to be the chemical carcinogens present in tobacco smoke. Cancer-causing viruses called oncogenic viruses have been called viral oncogenes. Genes like cellular oncogene (c-onc) or proto-oncogenes are identified in the normal cell which, when activated in certain special conditions can lead to oncogenic transformation of the cell.