I am one out of 8 kids in my family and I am the only one with RhNegative blood type. My mom said she doesn't have it and as far as she knew my Pop's didn't either? I look just like Pops though, so I had to rule out fowl play. My daughter, one of two also has it.
2006-09-09 08:51:41 · 5 answers · asked by hernandezconley 1 in Health ➔ Other - Health
Understanding Blood Types
Human blood genetics are quite complex because at each point there are a number of possible characteristics. Nevertheless, the genetics of human blood is far better understood than that of any other human tissue. To make things a little easier to understand, here are some guidelines for understanding how both the ABO blood types and the Rh system work.
The ABO Blood Types
* Each person receives an A, a B, or an O gene from each parent.
* The A and B genes are co-dominant, and the O gene is recessive.
* A person whose genetic type is either AA or AO will have blood type A, those with genetic type BB or BO will have blood type B, and only those with genetic type OO will have blood type O.
* A child with type O blood can have parents with type A, type B, or type O blood, but not type AB. Conversely, if two parents both have type O blood, all their children will have type O blood.
The Rh System
The Rh system is actually far more complex than the ABO system in that there are 35 different possibilities that one could inherit from each parent. These, however, are roughly grouped into positive and negative types. In this system the positive are dominant over the negative.
* If your genetic type is ++ or +-, your blood type will be Rh positive.
* Only if your genetic type is -- will you be Rh negative.
* If both parents have Rh+ blood with the +- genes, they could have children who are ++, +-, or --. In other words, their children could be either Rh positive or Rh negative.
* Most children who are O negative have parents who are positive, since the +- combination is so much more common than the -- combination.
2006-09-09 08:56:29 · answer #1 · answered by Sabina 5 · 0⤊ 0⤋
No, I don't think one of your parents has to have the RH negative blood type for you to have it. My mother and all three of my sisters are negative and I'm positive, but my daughter is negative like my mother and sisters.
2006-09-09 09:04:14 · answer #2 · answered by irish_yankee51 4 · 0⤊ 0⤋
your blood type and rh factor is determined by you birth father so it's on his side of the family and not your mother's side all my children are 0+ because they all have my husband's blood and blood type i'm A+ so that means my husband is 0+.
2006-09-09 08:59:04 · answer #3 · answered by Mary S 3 · 0⤊ 0⤋
yes i have RH negative. and i'm kindof dreading having kids, my mom had it too, she said she had to get a huge needle put into her belly at childbirth. cuz the babies blood is poisoness to you if its not RH -. i got RH - from my mom by the way. i have 3 siblings none of them have it, my dad doesnt have it either
2006-09-09 09:02:48 · answer #4 · answered by Nikki 5 · 0⤊ 0⤋
yes... as far as I know.
2006-09-09 08:54:39 · answer #5 · answered by want2no 5 · 0⤊ 0⤋