A) cancer genes
B) carinogenes
C) carcinomas
D) oncogenes
Correct Answer: D
Solution :
Genes that induce cellular proliferation are called protooncogenes. The protooncogenes encode for growth factors, growth factor receptors, transcription factor etc. They change into oncogene or cancer genes. Carcinomas is a type of cancer mainly derived from epithelial cells and they include cervical cancer, breast cancer, skin cancer, brain cancer etc. Carcinogenes are agents which cause cancer. Upto 20% of the cancer worldwide may be caused by virus.
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