
Originally Posted by
san2612
Oh, thanks. I didn't realize that if one parent has A and another has O, they can either produce a child with A or O blood types.
That's right, because A and B are dominant over O.
We all have two genes - we get one from our mother and one from our father. The dominant gene determines our blood type. O is the least dominant.
It the mother is has AO (type A, since A is dominant) and father OO (type O), the child is 50% likely to be type A (She has to get O from the father; and she's equally likely to get A or O from the mother).
According to the chard, the father who has O, no matter what the the mother's blood type is, cannot produce a child with AB blood type .
That's right - if the father is type O, he has OO genes. But a child who is AB must have got the A from one parent and the B from the other. If the father had either the A gene or the B gene, he would not be type O.
So I would correct:
'The ambulance man said that her father’s blood type was O and asked if anyone in the family could give the poor father a quick blood transfusion. Sinka knew that her blood type was AB. Thus, she and her father must have had different paternity.
Yes, that would solve the problem.
Indeed, I intended the next part of the story would be about the young girl's trip to the city to find her natural parents. She would have been a child in a rich family if nothing bad happened just after her birth.
However, as I wrote this paragraph long time ago, I wouldn't write the next :)