Can a certain blood type (and RH) be hereditary?

Question

Or run in a family? I just found out that quite a few people in my (immediate) family have O Negative blood. My dad and his father, me and my son and my sister too. I only found out that she’s the same type when she asked me if I had to get a Rhogam shot when I was pregnant. Is it just me or does there seem to be a lot of O Negative is in my family?

Answer 1

blood types (and RH factors) are inherited.


A blood type of "O" is really "O,O".
An RH of "negative" is really "-,-"

A blood type of "A" could be either "A,A" or "A,O" where the "O" gets dominated by the A.

Same way a "positive" could be "+,+" or "+,-"

So, if an "O,neg" has a child with another "O,neg", the only possibilities for the children are "O,neg"

But, if an "O,neg" has a child with an "A,pos", the child can be "O,neg", "O,pos", "A,neg", or "A,pos" depending on the true types of the "A,pos" parent.

So, as long as your parents are both "O,neg", all of their children will be "O,neg".
Depending on the types of their spouses, the grandchildren could be just about anything (except AB)

Answer 2

Blood type is hereditary. You have to have the same blood type as one of your parents. If both your parents have the same blood type you will have that type. If they have different blood types you have a 50/50 shot of having one or the other.

Rh is also hereditary. You can be positive or negative. The problem comes in when a pregnant woman is Rh negative and the baby is Rh positive. If any of the baby's positive red blood cells should enter your system your body will create antibodies which could cross the placenta and destroy the baby's positive red blood cells or the next Rh positive baby you have.

If your blood type is say O-positive, that means that you are type O and Rh positive.
O-negative would mean that you are type O and Rh negative.

You only have to worry about Rh incompatibility if your blood type is negative. It doesn't matter if the baby is positive or negative.

I hope I made some sense.

Answer 3

It is hereditary, the antibodies are not developed early in development, but later upon exposure to an antigen. The self antigen recognizing antibodies are produced by b-cell clones that undergo anergy early in development so they are typically incapable of being produced later on even with exogenous exposure. Knowing the above allows you to understand that a person inherits the blood group antigen (lets say AO) and expresses them leading to the deletion of anti-A antibody producing cells early in development. Then the person needs a transfusion and does not have cells to produce antibodies against donor blood expressing the A antigen. But, if B antigen is given to the person the clonal population of B-cells is intact to produce those antibodies and does. Because it IS inherited, I can predict Tasha's and Tasha's parents blood types from the information she provided, Tasha is OO, and her parents MUST be AO and BO. Tasha's siblings have a 25% chance of being any of the four blood types provided they share both parents.

Answer 4

Blood type and Rh factor are hereditary. Your blood type can be A, B, AB, or O. It is controlled by one gene, and the letters refer to the type of proteins (or lack of) on the membranes of your red blood cells. The Rh factor is controlled by a separate gene.

Answer 5

im rhesus negative which is really rare and both me and my dad are that blood group so a blood group is heridary
hope thats any help

Answer 6

Why do you think they stopped the simple blood testing card in schools, it threw up some 'peculiar' results.?????????