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Question 5 Paternity Blood Type Problem: • Husband: AB,M,+ • Ex-boyfriend: O, N, - • Wife: B, MN, + Child 1: O, N, - • Child
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Answer #1

The gene for blood type is inherited from biological parents wherein each parent transfers one of the two ABO genes to their child. A and B are co-dominant forms whereas O is recessive gene.

In the above case, if we cross the husband and wife, the blood type is AB,MN,+ which is the blood type of child 2.

If we cross ex-boyfriend and wife, the blood type is B,MN,+. Since neither of the two have gene A, it cannot be inherited by their child and hence the father of child 2 is not the ex-boyfriend.

Hence the answer is option three: husband.

Hope that answers your queries:)

Happy to help.

Thank you!

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