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ExamsNEETBiology

ABO blood group system is due to

  1. multifactor inheritance
  2. incomplete dominance
  3. multiple allelism
  4. epistasis

Correct answer: multiple allelism

Solution

The ABO blood group is determined by three alleles of a single gene: I^A, I^B, and i. Since more than two allelic forms exist for one locus, this is called multiple allelism.

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