Which one of the following blood groups is expressed in both homozygous and heterozygous conditions?

  • A
    Only $A$
  • B
    Only $B$
  • C
    $A$ and $B$
  • D
    $O$

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Similar Questions

What is the possible blood group of children whose parents are heterozygous for $A$ and $B$ blood groups?

How are blood groups in humans controlled?

Multiple alleles are present:

Identify the wrong statement with reference to the gene $I$ that controls $ABO$ blood groups.

Determine the number of possible phenotypes in the $ABO$ blood grouping system.

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