NEET UG 2025 · Zoology · Question 115
NEET 2025 Zoology, question 115
Question 115 of the NEET 2025 paper (code 45) is a Zoology question from Biotechnology: Principles and Processes. Its idea, Recombinants as White Colonies, was asked only this once in NEET 2017–2026. The NTA final answer key gives option 3.
Updated 2026-10-08
Q115 · Zoology
In the above represented plasmid an alien piece of DNA is inserted at EcoRI site. Which of the following strategies will be chosen to select the recombinant colonies?
The figure, described in words
Plasmid map (shown above the question) with BamH1, Tet R, Ori, amp and an EcoRI site within the β-galactosidase gene.
- 1Using ampicillin & tetracyclin containing medium plate.
- 2Blue color colonies will be selected.
- 3White color colonies will be selected.Official answer
- 4Blue color colonies grown on ampicillin plates can be selected.
Official answer: option 3 · NTA final answer key
Same idea
The only question on Recombinants as White Colonies
No other NEET paper from 2017–2026 tested this exact idea.
Recombinants as White Colonies: every question and how it was framed
The chapter
Biotechnology: Principles and Processes in ten years of NEET
46 questions from 2017–2026, asked in 10 of 10 papers, about 4.4 a paper. Cloning Vectors alone had 18.