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Solution


Q.

Which of the following most appropriately describes haemophilia                [2016]
1 Chromosomal disorder  
2 Dominant gene disorder  
3 Recessive gene disorder  
4 X-linked recessive gene disorder  

Ans.

(4)

Haemophilia is a sex-linked disease. It occurs due to the presence of a recessive sex linked gene h, which is carried by X-chromosome.