NEET UG 2021 · Botany · Question 146
NEET 2021 Botany, question 146
Question 146 of the NEET 2021 paper (code O1) is a Botany question from Biotechnology and its Applications. Its idea, Probe Hybridisation and Autoradiography, was asked only this once in NEET 2017–2026. The NTA final answer key gives option 1.
Updated 2026-10-08
Q146 · Botany
Now a days it is possible to detect the mutated gene causing cancer by allowing radioactive probe to hybridise its complimentary DNA in a clone of cells, followed by its detection using autoradiography because :
- 1mutated gene does not appear on a photographic film as the probe has no complimentarity with it.Official answer
- 2mutated gene does not appear on photographic film as the probe has complimentarity with it.
- 3mutated gene partially appears on a photographic film.
- 4mutated gene completely and clearly appears on a photographic film.
Official answer: option 1 · NTA final answer key
Same idea
The only question on Probe Hybridisation and Autoradiography
No other NEET paper from 2017–2026 tested this exact idea.
Probe Hybridisation and Autoradiography: every question and how it was framed
The chapter
Biotechnology and its Applications in ten years of NEET
24 questions from 2017–2026, asked in 9 of 10 papers, about 2.3 a paper. Gene Therapy alone had 8.