when i was pregnant, i found out that i was Rh-, my partner is O+, and our son is O-. Recently I found out that my sister is A+ while I am O-, is this possible, I know that my Mum is Rh-, hence why i have it, but why doesn't it pass to each child? Or is there something she is not telling me????
2007-02-05 01:49:09 · 8 answers · asked by antdamm 1 in Health ➔ General Health Care ➔ Other - General Health Care
Try this webpage:
http://www.blood.co.uk/pages/e13basic.html
It should help you out.
2007-02-05 01:52:04 · answer #1 · answered by Princesspoison 3 · 0⤊ 0⤋
For your partner to be O he must have both an A and a B genotype. for him to be Rh+ he could either be Dd or DD.
For you to be O- you must have both an A and a B and you must be dd in the Rh group.
So, your son got an A from one of you, a B from the other, and a d from each of you and your partner, so he's AB Dd thus O+
You could have children that were A+ A- B+ B- O+ O- but you can not have children that are AB anything with this partner.
Your mom is Rh- but if your dad is Rh+ then the kids could be + or - if the father is Dd (mixed) which expresses in the blood as + Same thing with your partner.
2007-02-05 02:04:04 · answer #2 · answered by rboatright 3 · 1⤊ 0⤋
Quite possible.
Rh is a recessive trait.
If both your parents were Rh negative (dd), then all their children would have had to be, being they each had two Rh- genes, one of which would have been passed from each parent to form an Rh- child.
If one parent was heterozygous Rh+ (Dd, i.e. having one Rh+ and one Rh- gene) then that parent passes an Rh- gene (d) 50% of the time. With an Rh- spouse(dd) , that means a 50-50 chance of having an Rh- (dd) or an Rh+ (Dd) child.
Only if one parent was homozygous for Rh+ (DD, i.e. having two Rh+ genes) or both parents were Rh- (dd), would the children ALL be one Rh type (either DD or dd).
It is clear that both your partner and your father are heterozygous Rh+ (Dd).
2007-02-05 02:55:42 · answer #3 · answered by Radagast97 6 · 0⤊ 0⤋
There is five of us both mam & dad were O.2of us are O 2 are B
& I am rh D negative.I thought the same has you.It can be in other members of your family.
2007-02-05 07:31:49 · answer #4 · answered by Ollie 7 · 0⤊ 0⤋
Yes of course its possible ....depends what blood group your father is each child could have a different combination of the 2.
2007-02-05 01:55:06 · answer #5 · answered by blazing_staruk 3 · 0⤊ 0⤋
I am O-, 1 son is O- and other son is O+. so it doesn't always pass on.
If you have another child who is O+, you will need to have an injection of Anti D after the birth so that your body does not reject subsequent children who are O+ as you will develop antibodies to +.
2007-02-05 01:54:00 · answer #6 · answered by MinaF 3 · 0⤊ 0⤋
yes it is possible.
2007-02-05 01:52:01 · answer #7 · answered by REALLY 5 · 0⤊ 0⤋
You 've been adopted!
2007-02-05 01:52:15 · answer #8 · answered by Anonymous · 0⤊ 0⤋