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Individual 5 The 2 alleles at the ALK locus are denoted ALK+ and ALK- The 3 alleles at the ABO blood group locus are A. B (co
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1. The individual 1 is the carrier of the disease alkaptonuria as 2 of it's child are affected so the genotype for the disease would be ALK+/ALK- and for the blood group it would be AO.

2. As one of the parent of individual 3 is affected with the disease hence the genotype for the affected individual would be heterozygous viz. ALK+/ALK- and it's blood group would be BO.

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