Please provide a link to this medical fact. I never heard of it.
Child and father can have different blood types.
Fetal cells can enter the maternal circulation and live in the mother, and maternal cells can enter the fetal circulation and live in the baby, but there are no paternal cells that enter the fetus, barring the one sperm cell joining with the ovum at conception.
I don’t think the Bible gives us any grounds as to the actual mechanism of the Incarnation anyway.
Really; how do you think they determine “paternity” .. it’s from the blood.
Sorry, but I’m not your research assistant. Look it up for yourself.