2007-09-12 02:56:03 · 20 answers · asked by Anonymous in Pregnancy & Parenting ➔ Parenting
Hi Cgh,
No, sorry but that is not genetically possible.
2 "O" blood type parents can only produce "O" blood type children, never "A."
If the child is an "A" blood type & one parent is an "O" blood type, then the other parent MUST be either "A" or "AB" type.
See my link below for the computer program to determine possible blood types for parents & children.
julie
2007-09-12 03:02:19 · answer #1 · answered by julie j 6 · 3⤊ 0⤋
1
2016-12-20 02:21:16 · answer #2 · answered by Anonymous · 0⤊ 0⤋
No it is impossible.
Think of it this way: everyone's blood type can be identified with two letters. the letters can be A, B or O. You can only pass on a blood type if you have that letter.
You can be any combination of those letters: AA, AB, BB, BO, or OO.
A and B are both dominant over O, so if someone is AO, or BO then they are identified as A or B on a blood test just like someone who is AA or BB.
If someone is O, then they must be OO---they can't be anything else.
When a woman has a baby she "gives" one of her letters to the child. An AO mom can give either an A or an O to the baby. She CAN'T give a B---she doesn't have it.
So two AO parents can have a child that is AO (blood test will say "A") or AA, or OO.
Two O parents cannot have an A baby or a B baby because they do not have that genetic info. to share.
As for negative (-) versus positive(+) ...a person can be + +, +-, or -- Positive is dominant over negative so someone who is +- would be treated as positive although they could pass on the negative to a child. If someone is negative they cannot pass on the positive trait.
BOTTOM line: Two O neg parents can ONLY have O neg. kids.
Hope this helps
2007-09-12 03:50:12 · answer #3 · answered by bookmom 6 · 0⤊ 3⤋
No. There are four main blood groups, A, B, AB and O. Two O group parents can ONLY produce a child with blood group O. Similarly, as the Rh+ gene is dominant, for a child to have a positive blood group at least one parent MUST be Rh+
2007-09-13 00:05:22 · answer #4 · answered by Anonymous · 0⤊ 2⤋
no. children inherit there blood type from there parents. For the child to have type A blood, at least one of the parents must be type A. If both parents are O negative, then the child would also be type O negative.
2007-09-12 03:00:49 · answer #5 · answered by animalcop06 2 · 2⤊ 1⤋
Probably Yes,Because genetically speaking every mother gave 23 chromosomes and the father gave 23 chromosomes also.maybe the grandparents have A positive blood.To make sure do a DNA testing.It will help.
2007-09-14 12:49:49 · answer #6 · answered by Anonymous · 0⤊ 1⤋
You have had some confusing and incorrect answers:
No they can not.
Rhesus positive (Rh+ve) is dominant over rhesus negative (Rh-ve) genes - both parents therfore must carry 2 x RH-ve, and so their child cannot inherit a Rh+ve gene.
As for blood groups, there are 4 types: O, A, B, AB
O is dominant. Each parent could be OO, OA or OB (all mean group O). If each had and donated their A gene then the child could have group A blood.
2007-09-12 05:17:29 · answer #7 · answered by megane 4 · 0⤊ 3⤋
NO. A, B, and the rh factor are protiens found in blood. If you are 0- then you don't have any of these protiens. If neither parents has the proteins then where could the child possibly get them in their own blood?
2007-09-12 03:36:59 · answer #8 · answered by orangeflameninja 4 · 0⤊ 3⤋
Only with donor egg and/or sperm! If both biological parents are O negative, the biological offspring will always be O negative.
2007-09-12 03:17:39 · answer #9 · answered by Jellen 2 · 0⤊ 2⤋
No. 'A' is dominant, so neither parent can carry an 'A'... they must have two copies of the 'O' gene.
Oh and I think +ve is dominant too...
So it means the man who thinks he's the parent isn't.
oops?
2007-09-12 03:05:45 · answer #10 · answered by bambamitsdead 6 · 2⤊ 1⤋