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Question: Answered & Verified by Expert
If a child is of O blood group and his father is of $B$ blood group, the genotype of father is
BiologyPrinciples of Inheritance and VariationJIPMERJIPMER 2012
Options:
  • A $\mathrm{I}^{\mathrm{O}} \mathrm{I}^{\mathrm{O}}$
  • B $\mathrm{I}^{\mathrm{A}} \mathrm{I}^{\mathrm{B}}$
  • C $\mathrm{I}^{\mathrm{O}} \mathrm{I}^{\mathrm{B}}$
  • D $\mathrm{I}^{\mathrm{O}} \mathrm{I}^{\mathrm{A}}$
Solution:
1346 Upvotes Verified Answer
The correct answer is: $\mathrm{I}^{\mathrm{O}} \mathrm{I}^{\mathrm{B}}$
Genotype of a person with blood group 'B' may be $I^B I^B$ or $I^O I^B$, person with genotype $I^B I^B$ can not produce offsprings with blood group ' O ' in any case but if the person's genotype is $\mathrm{I}^{\mathrm{O}} \mathrm{I}^{\mathrm{B}}$, then its offsprings may have blood group 'O'.
e.g.,

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