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Friday, 9 October

NEET UG 2026 · Botany · Question 138

NEET 2026 Botany, question 138

Question 138 of the NEET 2026 paper (re-exam) is a Botany question from Principles of Inheritance and Variation. Its idea, Down, Klinefelter and Turner Syndromes, was asked 4 times, in 2019, 2023 and 2026, across NEET 2017–2026. The NTA final answer key gives option 2.

Updated 2026-10-08

Q138 · Botany

Given below are two statements:

Statement I: Down's syndrome is caused by the absence of one of the X-chromosomes.

Statement II: Turner's syndrome is caused by the presence of an additional copy of the chromosomes.

In the light of the above statements, choose the correct answer from the options given below:

  1. 1Both Statement I and Statement II are correct
  2. 2Both Statement I and Statement II are incorrectOfficial answer
  3. 3Statement I is correct but Statement II is incorrect
  4. 4Statement I is incorrect but Statement II is correct

Official answer: option 2 · NTA final answer key

Same idea

Down, Klinefelter and Turner Syndromes, in other papers

NEET asked this idea 4 times, in 2019, 2023 and 2026. The other 3 questions below.

  • 2023 Q143Which of the following statements are correct about Klinefelter's Syndrome? A. This disorder was first described by Langdon Down (1866).…Other · Medium
  • 2023 Q180Broad palm with single palm crease is visible in a person suffering from-One-line MCQ · Easy
  • 2019 Q176What is the genetic disorder in which an individual has an overall masculine development, gynaecomastia, and is sterile ?One-line MCQ · Easy

Down, Klinefelter and Turner Syndromes: 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

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