A woman with type AB blood gave birth to a baby with type B blood. Two different men claim to be the father. One has type A blood, the other type B blood. Can the genetic evidence decide in favor of either? Why or why not?

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Jean KeelingLv2

1 Jul 2019

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Two parents have different blood types, the father is type A, the mother is type B. Their children, listed in birth order, have types AB, AB, AB, A, A, A, and now a child with type O. Explain to the father what might be happening and advise him on what to do.

amethysteagle96

There are also traits that have more than two alleles, one example of which is the ABO blood system that determines your dominant blood type. Most of you should know what type of blood you are. In the ABO blood system alleles A and B are co-dominant, and the O allele is recessive to A and B. Blood type A (phenotype) is found in individuals with genotypes AA or AO, while blood type B is found in individuals with genotypes BB or BO. The "O" blood type is only found in individuals with the genotype OO, and the blood type AB can ONLY be found in an individual with the genotype AB.

In this series of questions, you are working as a technician for the Maury Povich television show, and you need to determine the paternity of Sheila's baby. Sheila has blood type AB.

The first candidate for the father, Tony, has a known blood type of AO (type A blood). Which of the following Punnett squares illustrates the possible blood types of Sheila and Tony's offspring?

Find the correct statement (may require you to draw pedigrees and Punnett squares) A) A father with A blood type and a mother with B blood type, will always produce

children that are AB

B) A person with ii alleles will produce red blood cell that contain glycolipids with

galactosamine and galactose sugars

C) A person with the A blood type can only give blood to an A or O individual

D) If an AB father conceives a child with an O mother, the children have a 50%-50%

chance of being either AB or O

E) Each person has three alleles of the blood type gene

F) The IA allele is codominant to the i allele

G) A person with a B blood type will produce antibodies against the A blood type antigen