This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Virology, Subject name: Microbiology
The gene coding for core of HIV is - 
Select and explain. 
A. GAG, B. ENV, C. POL, D. TAT
A: GAG
Answer: A: GAG 
Explanation: The Gag gene determines the core and shell of the virus. REF:ANANTHANARAYAN AND PANIKER'S TEXTBOOK OF MICROBIOLOGY 9TH EDITION PAGE NO-571