0
Yes, two Rh negatives can have a positive baby if both parents are carriers of the Rhesus D gene. In this case, both parents will pass on recessive genes (Rh negative) but at least one parent must also possess the RhD gene in order for their child to be born Rh positive. please investigate before answering questions
Nina Wilson
Wiki User
∙ 15y agoAbsolutely yes. This is an example of Mendelian genetics (i.e. dominant vs recessive). The "rhesus factor" is a protein on the surface of red blood cells. Positive means that you make the protein, negative means that you don't. Since you only need one functioning copy of the gene for this protein to make the protein, the functional gene is "dominant." Someone who is rhesus positive can have either 1 or 2 functional copies of the gene. In genetics, this is written "RR" or "Rr," where the capital letter represents the functional copy of the gene. When two people who are "Rr" have children, each child inherits one copy of the gene from each parent. Each parent can pass on either the "R" or the "r" version. The chance that each child will be "rr" and be Rh negative is 25%. The "r" version of this gene is pretty common, especially in caucasians, so it is not unusual for people who are Rh positive to have one copy of the "r" version of the gene.
The o part of the blood type is a separate gene. This is recessive, which means that o parents will always have o children.
Wiki User
∙ 14y agoO blood group has no glycoprotein antigens or "sugar markers" on it. If both parents have O blood, I think the chances of the child having O blood is 100%. The rhesus factor (shared by both parents) may also be 100%.
Wiki User
∙ 13y agoNo, it can't happen.
if one of the parents or both are +, the child will be Positive.
I don't know if 2 negatives can have a positive. But i do know that if one of the parents is positive and the other is negative, you can have a either a positive or negative child. (I have twins, one is negative and the other is positive.)
Wiki User
∙ 13y ago"No, this can't happen, because for positive to come at least one of the parents should be positive."
The correct answer to your question is Yes. Rh positive is a dominant trait if we think of this trait in simple terms setting aside the different types of Rh proteins. If both parents are heterozygous then they have a %25 chance of having an Rh negative child but both parents must be heterozygous. If either one is homozygous dominant than %100 of their children will be Rh positive. If they are both homozygous recessive their children will all be Rh negative.
Wiki User
∙ 11y agoYes, but it is very rare. I am a birthing center nurse and I have a family who's baby is RH + and the mom and dad are negative. (The mom's mom is RH positive0.
Wiki User
∙ 13y agoNo, this can't happen, because for positive to come at least one of the parents should be positive.
Wiki User
∙ 11y agoNope, one of the parents must be positive for the child to be too.
Wiki User
∙ 12y agonot possible.
Wiki User
∙ 13y agoNo.
Add your answer:
Earn +20 pts
Can two parents with A positive blood have a child with O negative blood type?
No.
Can two parents with b positive make o positive?
Yes. The child will be either A positive or B positive or even AB positive. If the grandparents have a negative (A negative, B negative), there is a slight chance that the child will have a negative. A type O is out of the question. The fact that there are two positive parents means that there is no risk to the mother of Rh negative disorders.
Can parents with both negative blood parent a positive child?
absolutely. as long as one of the parents is positive, the child can be positive. and if one parent is A the other B, the child can be A, B, AB or O depending on the parents' other alleles. so the child can definitely be A or B positive, but also A negative, B negative, AB negative, AB positive, O positive or O negative.
Can a a positive father and a o negative mother produce a a negative child?
No they can not. two positives do not make a negative
Why do rh positive parents have an rh negative baby?
Each person carries two bits of rh imformation, called alleles, and each can be positive or negative. A person is rh+ if they have at least one positive allele. Only if both their alleles are negative are they considered as rh-. When two parents have a baby, they each pass one allele on. So if both parent has one positive and one negative allele, and both passed on their negative allele to their baby, then the baby would be rh negative. The chances of two rh positive parents having a rh negative baby are about 18%.
If two parents have A-negative and O-negative bloodtypes is it possible for their child to be A-positive?
No. Two rhesus-negative parents cannot have a rhesus-positive child.
Can two parents with o positive have a child with a A negative blood type?
it is possible but the child can be a positive
Can two parents with A positive blood have a child with O negative blood type?
No.
Can two parents with b positive make o positive?
Yes. The child will be either A positive or B positive or even AB positive. If the grandparents have a negative (A negative, B negative), there is a slight chance that the child will have a negative. A type O is out of the question. The fact that there are two positive parents means that there is no risk to the mother of Rh negative disorders.
Can a A positive blood type mother give birth to Rh negative daughter?
Can a child with RH neg blood come from parents that are A positive and A negative
Can a child have a negative blood types if the parents are both a positive?
Yes! Parents have two genes for pos/neg blood type, and only one of them needs to be positive for the parent to have positive blood type. Most positive-blooded people have one positive gene and one negative gene. If both positive parents pass on their negative gene, they can have a child with a negative blood type.
Can two parents who have positive blood type have a child with negative blood type?
yes they can
Can 2 A positive parents have an O negative child?
No. O and Rh negative are both recessive traits--both alleles must be that trait before it expresses. The term for an A positive child from two O negative parents is "grounds for divorce."
Can parents with both negative blood parent a positive child?
absolutely. as long as one of the parents is positive, the child can be positive. and if one parent is A the other B, the child can be A, B, AB or O depending on the parents' other alleles. so the child can definitely be A or B positive, but also A negative, B negative, AB negative, AB positive, O positive or O negative.
Can two parents who have negative blood type have a child with positive blood type?
most probably not.
Can two A positive blood type parents have a child with O negative blood?
Yes. The geneotype for both parents must be AO+- for the child to be OO--
What will two negative parents have positive or negative baby?
a negative times a negative is a positive so the answer is positive
