Inheritance of ABO blood group system is an e | vedclass

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(A) The $ABO$ blood group system in humans is controlled by the gene $I$. This gene has three alleles: $I^A$,$I^B$,and $i$.Since there are more than t

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Multiple allelism

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(A) The $ABO$ blood group system in humans is controlled by the gene $I$. This gene has three alleles: $I^A$,$I^B$,and $i$.Since there are more than two alleles present for a single gene locus within a population,this phenomenon is known as multiple allelism.Different combinations of these three alleles result in four distinct phenotypes: blood types $A, B, AB$,and $O$.

Inheritance of $ABO$ blood group system is an example of

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