NEET UG 2019 · Botany · Question 129
NEET 2019 Botany, question 129
Question 129 of the NEET 2019 paper (code P1) is a Botany question from Principles of Inheritance and Variation. Its idea, Centimorgan Definition, was asked only this once in NEET 2017–2026. The NTA final answer key gives option 3.
Updated 2026-10-08
Q129 · Botany
What map unit (Centimorgan) is adopted in the construction of genetic maps ?
- 1A unit of distance between two expressed genes, representing 10% cross over.
- 2A unit of distance between two expressed genes, representing 100% cross over.
- 3A unit of distance between genes on chromosomes, representing 1% cross over.Official answer
- 4A unit of distance between genes on chromosomes, representing 50% cross over.
Official answer: option 3 · NTA final answer key
Same idea
The only question on Centimorgan Definition
No other NEET paper from 2017–2026 tested this exact idea.
Centimorgan Definition: every question and how it was framed
The chapter
Principles of Inheritance and Variation in ten years of NEET
43 questions from 2017–2026, asked in 10 of 10 papers, about 4.1 a paper. Linkage and Recombination alone had 6.