Mr. and Mrs. Black had a baby last night in the local hospital. At around the same time, Mr. and Mrs. White also had a baby in the same hospital in the room adjacent to the Blacks. Both babies were girls, both weighed about the same, and looked very similar. The following day, a nurse brought the babies from the nursery to the new parents, but Mr. and Mrs. Black insist that they got the wrong baby! To test that, everybody's blood was drawn to establish the blood types. Here are the results:
Mr. Black has blood type O Mrs. Black has blood type AB The baby in Black's room has blood type O
Mr. White has blood type A Mrs. White has blood type B The baby in White's room has blood type A
Try to solve this situation using what you have learned about the alleles and genotypes coding for these blood types to establish if the Blacks' and Whites' babies were switched. Use the Punnett squares to prove your point.
Have fun with it!

Given that the O blood type allele is recessive to both the A and B blood type alleles, Mr. Black's genotype will be IoIo. Since the alleles for blood types A and B are co-dominant, Mrs. Black's genotype will be IaIb. She has an AB blood type. The punnet square below, which displays a cross between them, depicts the potential blood types that their child might have.

Mr. White has A blood type, thus his genotype may be homozygous, IaIa ;or heterozygous IaIo, while Mrs. White have B blood type, and therefore her genotype will be either IbIb or IbIo

Therefore, the white family member can have any blood type. Given that the kid in the Black couple's room has blood type O, and since we've already established that Black people can only have children with A or B blood types, we can assume that the children have been switched and that the White couple's child actually belongs in the Black couple's room

Learn more about genotypes on:

https://brainly.com/question/22117

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