A man with AB blood group has married a woman with O group. Show the possible genotype of the progeny?

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Answer

Answer

Answer

Possible Genotype of Progeny from AB and O Blood Group Parents

Possible Genotypes of Parents

The man with AB blood group may have genotype AB, while the woman with O blood group may have genotype OO. The AB blood group is inherited from the A and B alleles, which are codominant, while the O blood group is inherited from the recessive allele, i.e., O.

Possible Gametes of Parents

The man may produce gametes with A and B alleles since he has AB blood group. However, the woman can produce gametes with only O allele since she has OO genotype. Therefore, the possible gametes of parents are:

- Man: AB
- Woman: O

Possible Genotypes of Progeny

The possible genotypes of progeny from the cross between AB and O blood group parents can be determined using a Punnett square. The Punnett square shows the possible combinations of gametes from both parents and the resulting genotypes of offspring.

The Punnett square for the cross between AB and O blood group parents is as follows:

| | A | B |
|----|---|---|
| O | AO| BO|
| O | AO| BO|

From the Punnett square, it can be observed that all the offspring will have either A or B alleles, making them have AB blood group. Therefore, the possible genotypes of progeny from the cross between AB and O blood group parents are:

- AO (A blood group phenotype)
- BO (B blood group phenotype)
- AB (AB blood group phenotype)

Conclusion

The cross between a man with AB blood group and a woman with O blood group can result in offspring with AB blood group, either A or B blood group, depending on the combination of gametes. The possible genotypes of progeny are AO, BO, and AB, with all having AB blood group phenotype.

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