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NEET2017ZoologyPrinciples of Inheritance and VariationActual

If two persons with 'AB' blood group marry and have suffeciently large number of children, these children could be classified as 'A' blood group. 'AB blood group 'B' blood group in 1: 2: 1 ratio. Modern technique of protein electrophoresis reveals presence of both ' A ' and ' B ' type proteins in ' A B ' blood group individuals. This is an example of

Options

  1. Acodominance
  2. Bincomplete dominance
  3. Cpartial dominance
  4. Dcomplete dominance

Correct answer

A. codominance

Step-by-step solution

AB blood group is characterised by the presence of both antigen A and B i.e. I ^ A and I ^ B over the surface of RBCs. Here both alleles are able to express themselves forming antigens A and B. This is called as codominance.

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