Asked by Kevin Browne on May 12, 2024
Verified
An oncogene is
A) a viral gene with no relation to the host cell's genes.
B) a mutated form of a proto-oncogene.
C) a bacterial gene that causes cancer in the host.
D) always seen in human cancer cells.
E) a gene that turns off cellular reproduction.
Proto-oncogene
A normal gene that can become an oncogene due to mutations or increased expression, potentially leading to cancer.
Oncogene
Cancer-causing gene formed by a mutation in a proto-oncogene; codes for proteins that stimulate the cell cycle and inhibit apoptosis.
- Differentiate between oncogenes and tumor-suppressor genes.
Verified Answer
JG
Joslynn GarciaMay 16, 2024
Final Answer :
B
Explanation :
Oncogenes are genes that have the potential to cause cancer. Proto-oncogenes are normal genes that regulate cell growth and division, but when mutated they can become oncogenes and promote uncontrolled cell growth, leading to cancer. Therefore, choice B, a mutated form of a proto-oncogene, is the correct answer.
Learning Objectives
- Differentiate between oncogenes and tumor-suppressor genes.