Q6. Identify the wrong statement with reference to the gene ‘I’ that controls ABO blood groups.
3. When IA and IB are present together, they express same type of sugar.
ABO blood groups are controlled by the gene I.
The gene (I) has three alleles IA, IB and i. The alleles IA and IB produce a slightly different form of the sugar while allele i does not produce any sugar.