Questions
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 IA and IB are present together, they express same type of sugar.
c
Allele ‘i’ does not produce any sugar.
d
The gene (I) has three alleles.
detailed solution
Correct option is B
The gene (I) has three alleles IA, IB and i. A person with genotype IAIB will have both antigens A and antigen B that are slightly different forms of sugar while allele i does not produce any sugar. In an individual only two alleles can be present. Therefore, multiple alleles can be found only when population studies are made.Talk to our academic expert!
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