Q. Identify the wrong statement with reference to the gene 'I' that controls ABO blood groups.
A) A person will have only two of the three alleles.
B) When $I^A$ and $I^B$ are present together, they express same type of sugar.
C) Allele 'i' does not produce any sugar.
D) The gene (I) has three alleles.
Explanation
[Solution] $I^A$ and $I^B$ are codominant and each produces a different type of sugar. Answer (2).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.