Identify the wrong statement with reference to the gene That controls ABO blood groups.

Options

A. The gene (I) has three alleles
B. A person will have only two of the three alleles
C. When `I^A` and `I^B` are present together, they express same type of sugar
D. Allele ‘i’ does not produce any sugar

Answer

C

Explanation

ABO blood groups are controlled by the gene I . The gene I has three alleles, `I^A , I^B` and i . The alleles `I^A` and `I^B` produce a slightly different form of the sugar while allele i does not produce any sugar. Because humans are diploid organisms, each person can possess at the most any two of the three I gene alleles.