Identify the set of sex-determining chromosomes that correc…

Biology NEET Full Syllabus Mock Test 180 Questions New Syllabus Mock Test - 11 PCB Single Correct MCQ

Published by: CGP EDU Academic Team

Published on: August 21, 2026

Identify the set of sex-determining chromosomes that correctly indicates the sex of the respective organism.

XO type of sex chromosomes determines male sex in grasshoppers.

Homozygous sex chromosomes (XX) produce male sex in Drosophila.

XXY condition in humans, as in Turner syndrome, determines male sex.

Homozygous sex chromosomes (ZZ) determine female sex in birds.

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In Drosophila, the XX sex chromosomes produce females, and XY sex. chromosomes produce males. The XXY condition in humans is known as Klinefelter syndrome, not Turner syndrome. Turner syndrome involves a single X chromosome (X0) and results in females, not males. In birds, the ZZ condition determines male sex, while the ZW condition determines female sex. The female birds have dissimilar sex chromosomes (ZW), and males have the similar ZZ combination.

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