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NEETZoologyPrinciples of Inheritance and Variation

How many different genotypes of the human ABO blood types are possible?

Options

  1. AThree
  2. BFour
  3. CFive
  4. DSix

Correct answer

D. Six

Step-by-step solution

in the case of co-dominance the F1 generation resembles both parents. A good example is different types of red blood cells that determine ABO blood grouping in human beings. ABO blood groups are controlled by the gene I. The plasma membrane of the red blood cells has sugar polymers that protrude from its surface and the kind of sugar is controlled by the gene. The gene (I) has three alleles I A , I B and i. The alleles I A and I B produce a slightly different form of the sugar while allele i does not produce any su

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