1
Question
______have been identified in normal human cells which, when activated under certain conditions, could transform normal cells into cancerous cells.
______have been identified in normal human cells which, when activated under certain conditions, could transform normal cells into cancerous cells.
Open in App
Solution
The correct option is B Proto oncogenes
The cellular oncogenes (c-onc) or proto-oncogenes are present in the normal cells.
The proto-oncogene acts as a positive growth regulator, and is involved in promoting the differentiation and proliferation of normal cells.
However, these genes undergo mutations. The mutant, cancer-promoting forms of proto-oncogenes are referred to as oncogenes. This causes the transformation of normal cells to cancerous cells.
Viral oncogenes (v-onc) are present in oncogenic viruses that cause cancer. Example: Human papillomavirus.
The cellular oncogenes (c-onc) or proto-oncogenes are present in the normal cells.
The proto-oncogene acts as a positive growth regulator, and is involved in promoting the differentiation and proliferation of normal cells.
However, these genes undergo mutations. The mutant, cancer-promoting forms of proto-oncogenes are referred to as oncogenes. This causes the transformation of normal cells to cancerous cells.
Viral oncogenes (v-onc) are present in oncogenic viruses that cause cancer. Example: Human papillomavirus.
Suggest Corrections
2
Similar questions
View More
Join BYJU'S Learning Program
Explore more
Join BYJU'S Learning Program
