$ABO$ blood groups in humans are controlled by the gene $I$. It has three alleles: $I^A, I^B$ and $i$. Since there are three different alleles, six different genotypes are possible. How many phenotypes can occur?

  • A
    Three
  • B
    One
  • C
    Four
  • D
    Two

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Similar Questions

In the $ABO$ blood grouping system,what are the number of possible phenotypes and genotypes,respectively?

$A$ man with blood group $A$ marries a woman with blood group $B$. What are all the possible blood groups of their offspring?

What are alleles?

If both parents have blood group $AB$, which blood group cannot be found in their child?

The gene $I$ that controls the $ABO$ blood grouping produces antigens on the surface of red blood cells. What are these antigens made of?

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