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Friday, 9 October

NEET UG · Biology · Principles of Inheritance and Variation

XO, XY and ZW Sex Determination

NEET asked XO, XY and ZW Sex Determination twice, in 2019 and 2022: 2 of the 1,875 questions in the 10 papers from 2017–2026. It belongs to Sex Determination and Genetic Disorders, in Principles of Inheritance and Variation (Biology). The longest wait between two papers asking it was 3 years.

Updated 2026-10-08

Times asked
2
in 2017–2026
Papers
2
of 10
First asked
2019
last in 2022
Chance next paper
6%
calibrated historical rate

Questions on this idea, by paper

2017–2026. 2019 and 2022.

0240’170’181’190’200’211’220’230’240’250’26

How NEET framed it

One-line MCQ is the usual form. Skill tested: recall.

  • Identify group with sex determination type
  • Incorrect statement selection on sex determination

Chance asked next paper 6%

Every question

All 2 questions

From the official NEET UG papers, newest first. Open one for the full question, the options and the official answer.

Papers: NEET 2019, NEET 2022.

Same topic

Other ideas in Sex Determination and Genetic Disorders

Sex Determination and Genetic Disorders has 9 ideas NEET has asked; 4 of them came up in more than one question.

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