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Friday, 9 October

NEET UG 2017 · Botany · Question 128

NEET 2017 Botany, question 128

Question 128 of the NEET 2017 paper (code A) is a Botany question from Principles of Inheritance and Variation. Its idea, Aneuploidy and Non-disjunction, was asked only this once in NEET 2017–2026. The CBSE official answer key gives option 1.

Updated 2026-10-08

Q128 · Botany

A disease caused by an autosomal primary non-disjunction is

  1. 1Down's SyndromeOfficial answer
  2. 2Klinefelter's Syndrome
  3. 3Turner's Syndrome
  4. 4Sickle Cell Anemia

Official answer: option 1 · CBSE official answer key

Same idea

The only question on Aneuploidy and Non-disjunction

No other NEET paper from 2017–2026 tested this exact idea.

Aneuploidy and Non-disjunction: 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. Sex Determination and Genetic Disorders alone had 15.

Principles of Inheritance and Variation: questions per paper

0365’174’185’194’202’216’225’236’243’253’26