NEET UG 2019 · Botany · Question 121
NEET 2019 Botany, question 121
Question 121 of the NEET 2019 paper (code P1) is a Botany question from Principles of Inheritance and Variation. Its idea, XO, XY and ZW Sex Determination, was asked twice, in 2019 and 2022, across NEET 2017–2026. The NTA final answer key gives option 3.
Updated 2026-10-08
Q121 · Botany
Select the incorrect statement.
- 1Male fruit fly is heterogametic.
- 2In male grasshoppers, 50% of sperms have no sex-chromosome.
- 3In domesticated fowls, sex of progeny depends on the type of sperm rather than egg.Official answer
- 4Human males have one of their sex-chromosome much shorter than the other.
Official answer: option 3 · NTA final answer key
Same idea
XO, XY and ZW Sex Determination, in other papers
NEET asked this idea twice, in 2019 and 2022. The other question below.
- 2022 Q106XO type of sex determination can be found in :One-line MCQ · Easy
XO, XY and ZW Sex Determination: 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.