Biology Inheritance / Variation & Genetics SZABMU 2024 Reconduct
PMDC Verified Question 15 of 94
There is a situation in which hemophilia effects both gender equally. What is the reason behind it?
A
X-linked
B
Y-linked
C
Co-dominant
D
Autosomal
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option D: Autosomal
Concept:

Traits that affect males and females at statistically equal rates are generally located on non-sex chromosomes.

Solution:

  • Classic Hemophilia A and B are X-linked recessive, heavily skewing towards males.
  • However, if a bleeding disorder (such as Hemophilia C, caused by Factor XI deficiency) affects both males and females equally, it must be located on an autosomal chromosome.
  • Autosomes are homologous pairs inherited equally by both sexes, ensuring no gender bias in the expression of recessive or dominant traits.


Why other options are incorrect:

  • X-linked / Y-linked: Inherently create a gender bias due to the structural differences between XX and XY chromosome pairings.

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