question for a nurse!!!

*Anna* · #1 September 25th, 2008, 04:42 PM

I have a question. My mom has A- blood, my dad has A+. I found out today I have O+. My mom is majorly confused, thought I always had A+ blood! Please help me if you know!

Oriyan · #2 September 25th, 2008, 05:52 PM

It IS possible for you to be O.

http://www.biology.arizona.edu/human_bio/p...html#calculator

Interesting.

Both your parents must have had the AO gene and not the AA gene although the A is dominant. You got the recessive gene!

*Anna* · #3 September 25th, 2008, 07:30 PM

bump---- my mom is upset and I'm looking for some answers

TIA

ShannonMVT · #4 September 25th, 2008, 07:39 PM

Ditto what Sam said. You have two genes for blood type. If you are AO or AA then you make A protein and are type A. If you are BO or BB then you make B protein and are type B. That is how some people have type AB, they make both the A protein and the B protein. If you are OO, then you are type O and don't make A or B protein.

In your case, Dad must have had AO and Mom had AO as well. They can each only pass on one set of chromosomes, so only one of the genes. So if they both pass on their O gene, you end up as OO, blood type O.

Mjp121212 · #5 September 25th, 2008, 08:57 PM

Yeah what Shannon said. My dad is o, my mom is A and when tested I show as an A but I'm really an AO because that is the only way I can be and test as an A. Dh is an A but I'm not sure if he is an AO or not, but I think I remember they tested Brayden and he is an A as well.

And if you have AB blood and you so has AO then your children can be either:

AA
AO
AB
BO

Each child would have a25% chance of each type.

soImarriedAnerd · #6 September 25th, 2008, 11:15 PM

the above its totally possible, it doesn't mean your some swapped baby at birth (i can only guess what your poor mom is thinking right now!)

And Congrats on being + ---no rhogam shot for you!!!!!

ShannonMVT · #7 September 26th, 2008, 08:50 AM

Quote:

And Congrats on being + ---no rhogam shot for you!!!!![/b]

I'm A+ as well. Dh is O+. I tested his blood myself when I was a student learning how to do it. I SO wish I could work in a blood bank lab. There's lots more to it than just the main blood types and it's fascinating. Or else me = nerd.