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Dear Student,

Ans. Option 2 is correct: 25%



Hence, there is a 25% probability that the child is affected with Thalassemia. 

Regards

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Dear student,

When both the parents are carrier of thalassaemia, the chances of getting an affected child is 50% (25% of major thalassaemia and 25% of minor thalassaemia). Hence,option (2) is correct.

Regards
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Dear student,

Thalassemia occurs by the mutation in the genes that make haemoglobin present in the red blood cells. It is an inherited autosomal recessive blood disorder . It leads to the weakening and destruction of red blood cells. It involves formation of abnormal form of haemoglobin, the protein in red blood cells that carries oxygen.

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Dear student,

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