Several genes called________ have been identified in normal cells which when activated will turn into __________, and under certain conditions, could lead to cancerous transformation of the cells.
Complete the above paragraph by selecting correct sequence of words.
Oncogenes, proto oncogenes
Cellular oncogenes, proto oncogenes
Proto oncogenes, oncogenes
Cellular oncogenes, oncogenes
Causes of cancer -
Carcinogens
- wherein
Transformation of normal cells into cancerous neoplastic cells may be induced by physical, chemical or biological agents. These agents are called carcinogens.