Biology Inheritance / Variation & Genetics UHS 2024
PMDC Verified Question 21 of 94
Chromosomal abnormality in Turner's syndrome is represented by?
A
XXX
B
XYY
C
XO
D
XXY
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option C: XO
Concept:

Aneuploidy, the presence of an abnormal number of chromosomes, leads to severe developmental syndromes.

Solution:

  • Turner's syndrome is a genetic condition affecting females, caused by monosomy of the sex chromosomes.
  • It occurs due to the complete or partial absence of one X chromosome.
  • This chromosomal abnormality is conventionally represented as 45, XO.


Why other options are incorrect:

  • XXX: Triple X syndrome.
  • XXY: Klinefelter syndrome (affects males).
  • XYY: Jacobs syndrome.

Quality & Fidelity Assurance: Every question on BeambePrep is rigorously curated against the official PMDC syllabus with zero filler, zero out-of-syllabus content, and zero typos. When an authentic past paper originally contained a historical mistake or ambiguity from the examining board (such as UHS or NUMS), BeambePrep faithfully reflects the original paper while detailing the nuance and scientific consensus in the autopsy above.

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