If a mother is O blood type and a father is O blood type can they produce a baby with A blood type?

Answer 1

No. O is recessive, therefore if both parents are O they do not have the A gene and can therefore not pass it on to a child.

**Yes. My son is 0- and my daughter in law is 0+ and they just had a A+ baby boy. It is very rare but the doctor said it can happen because every has a primary and secondary (recessive) blood gene. Since my d-i-law's father is A+ and her mother is 0+ and his parents are both 0+ but his mothers mother is A+ and her Father is 0+ there are many recessive A+ genes in their DNA blood type therefore they can have a A+ child. (Example mother is O+/A+ and father is 0-/A+ equals= A+/0 child.) 0 seems to be universal and can throw off a recessive gene. In our case; since it is rare; the baby and the mother's blood types caused him to have alot of jaundice (18) so he had to go back in hospital to be under the light for an additional 24 hours to bring it down. She was nursing and her milk had not come in to give him the fluids to fight off the excess billiruben count. Other than that; it will not be a problem for either of them.

Hope this helps, as it is hard to find this information on the internet. Most sights say no because they are stating the normal without considering the recessive secondary gene type that are rare. Ask a doctor .....it happens