If one parent has A blood type and the other has O- is it possible for the baby to have B?

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If one parent has blood type 'A' , it is represented like this ' I^Ai or I^AI^{A '} .

The parent with blood type 'O' would have ' II or Ii ' same thing.

However to have blood type be, you would need ' I^Bi or I^BI^{B '} .

Neither combination of the type A or O would result in a type B blood when crossed using a punnet square.

When it comes to blood, representations are as follows:

A - I^AI^A or I^Ai

B - I^BI^B or I^Bi

AB - I^AI^B

O - I^OI^O or I^Oi

- The 'i' is considered an 'O' allele essentially making 'O' a universal donor if I'm correct.

Answer

here is a dominance chart. They discuss Rh factor underneath. http://www.bloodbook.com/inherited.html

Answer

No it is not possible!! In order for there to be a type B baby, one parent MUST be type B.

First answer by ID1096768229. Last edit by Travis.P. Contributor trust: 30 [recommend contributor]. Question popularity: 50 [recommend question]

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If baby is AB negative what is the parent blood type? Does a baby have the same blood type as one parent or can they have a different one then both parents? If one parent has A blood type and the other thas O- is it possible for the baby to have B? If one parent has A pos blood and the other has O pos blood what type will the baby have?