If the father is O negative and the mother O positive can the baby be AB positive?

No. Neither parent of an AB child can be O. There needs to be an A and a B in there somewhere.

Very unlikely. But there are many possible explanations:(1) You overheard this as gossip. Gossip can be less than perfectly accurate.(2) About 1.2% of the time a blood test is wrong.

With three people involved, that's almost 4%.(3) People can have antigens to the A and B proteins, yet not be AB blood type.(4) Blood type genes can turn on or off or break or repair or be masked by gene expression factors. If this is really important, have a DNA test done. They're a lot more definitive than blood tests.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.