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Types of Disorders and Diseases (GATE)
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Which of the following are XY-linked hereditary disorders?
- Colour vision deficiency
- Ambras syndrome
- Haemophilia
- Retinitis pigmentosa
- Complete colour blindness
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A
4 and 5
💡 Explanation:
This option is correct because retinitis pigmentosa is an XY-linked hereditary, degenerative eye disease that causes severe vision impairment and often blindness.
Complete colour blindness is a severe vision imparement, leaving a person completely unable to distinguish any colour. It is an XY-linked hereditary disease.