Oncogenes
(I)function as cell cycle inhibitors.
(II)encode a protein which block cell cycle inhibition.
(III)are expressed by cells that have higher levels of human growth hormone.
(IV)can function as transcription factors.
A)I,III,IV
B)II,III
C)III,IV
D)II,IV
E)II

Question

Quizplus · Accepted Answer

Oncogenes are genes that have the potential to cause cancer. They can function as transcription factors, which is option IV. They encode proteins that can block cell cycle inhibition, which is option II. However, they do not function as cell cycle inhibitors (option I) and are not necessarily expressed by cells with higher levels of human growth hormone (option III). Therefore, the best choice is D.

Oncogenes (I)function as Cell Cycle Inhibitors