6. It was suspected that two babies had been exchanged in a hospital. Mr. and Mrs. Jones received baby #1 and Mr.
and Mrs. Simon received baby #2. Blood typing tests on the parents and the babies showed the following: Mr.
Jones: Type A Mr. Simon: Type AB Mrs. Jones: Type O Mrs. Simons: Type O Baby #1: Type A Baby #2 Type O Were
the babies switched? How do you know whether they were or they weren't?

Question

31-01-2022
Biology

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6. It was suspected that two babies had been exchanged in a hospital. Mr. and Mrs. Jones received baby #1 and Mr.
and Mrs. Simon received baby #2. Blood typing tests on the parents and the babies showed the following: Mr.
Jones: Type A Mr. Simon: Type AB Mrs. Jones: Type O Mrs. Simons: Type O Baby #1: Type A Baby #2 Type O Were
the babies switched? How do you know whether they were or they weren't?

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lheduardomarques lheduardomarques · Answer 1 · 2022-02-09T11:25:17+01:00

Baby 2 belongs to the Jones family and baby 1 belongs to the Simons family, because baby 1, having type O, cannot have a type AB father.

Genetic determination of ABO blood types

The presence or absence of agglugens in people's blood is determined by the IA, IB or i genes. Genes IA and IB are dominant over gene i. The IA gene, for example, determines the production of an enzyme that synthesizes agglutinogen A.

Therefore, if one person has the IA IA genotype and another person has the IA i genotype, the red blood cells of both have agglutinogen A, that is, they have blood type A. Something similar happens in the case of people with blood type B. But people with blood type AB have gene IA IB, because there is no dominance between these two genes.

With this information, we can conclude that there really was an exchange of babies.

Learn more about Blood types in https://brainly.com/question/275815