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In genetics, you have to distinguish between two categories of features: features of the phenotype and features of the genotype.
The phenotype are all the features your body actually has, such as your eye color, your hair color, your blood group and your rhesus factor.
The genotype is the information actually contained on your DNA. While you may have blue eyes, your DNA might actually contain data for brown eyes that is simply not translated and therefore doesn't show.
(More in detail, you have two chromosomes for each task, i.e. information for everything in your body exists in two slightly different versions in every one of your cells, but only one of the versions is actually used.)
In the process of meiosis, the chromosome set is halved so that every sperm and every egg cell only contain one chromosome for each task. When they come together, the sets combine and make a whole (doubled) set again.
Now if both your parents were rhesus positive but you're negative, that simply means both your parents have on one chromosome the information for rhesus negative, and by chance a sperm and an egg cell both with rhesus negative met.
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What blood types would your parents have to be to have a child with A positive blood type?
Discounting rare but possible mutations the following holds true. Parents blood groups A and A, A and B, A and O, B and B, B and O, O and O can produce type O blood in their children. The rhesus factor (Rhesus positive/rhesus negative) depends on the rhesus pairing in the parents as follows: Father rhesus positive, mother rhesus positive or rhesus negative = rhesus positive or rhesus negative Father rhesus negative, mother rhesus positive = rhesus positive or rhesus negative Father rhesus negative, mother rhesus negative = rhesus negative Example: A rhesus positive father and rhesus positive mother of blood type A and O respectively could produce an O positive child, as could a rhesus positive father and rhesus negative mother both of blood group O. Follow the link to an excellent site.
Can blood be either B positive or negative?
Not exactly. Human blood may have positive (ca. 80%) or negative (remaining 20%) Rhesus factor. It means that that a substance known as Rhesus factor is either found or not in a human blood test. Transfusion of "positive" blood to a "negative" recipient may result in very negative consequences (but not vise versa) . A problem known as Rhesus conflict may arise when a Rhesus-negative woman is pregnant with a Rhesus-positive baby.The name Rhesus factor comes from Rhesus monkey in which it was first found.
What does plus and - stand for in blood group?
positive and negative stands for either Rhesus Positive or Rhesus negative which means that a persons Red blood cells (RBC) either have D antigens on their cell surface membranes or not. a person who is Rhesus negative will have D Antibodies in the blood plasma and can only be given Rhesus negative blood types in a blood transfusion. Rhesus positive blood types can be given either D+ or D- in a blood transfusion as they have no D antibodies in their blood plasma. hope this helps
Can a child be O negative if both parents are O positive and three of the grandparents are O positive and one is B negative?
It is possible as the Rhesus factor is a dominant trait. So, even if the parents have only one allele for the factor, there is a 1/4th chance that the child could get neither allele from the parents and end up as O negative.
If both parents are rhesus positive can they have a negative baby?
Yes, if both parents each have the dominant positive AND recessive negative genes, they have a 1 in 4 chance of having a child with rh-neg blood. Both mother and father would have to pass the recessive gene to the offspring.
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.
What blood types would your parents have to be to have a child with A positive blood type?
Discounting rare but possible mutations the following holds true. Parents blood groups A and A, A and B, A and O, B and B, B and O, O and O can produce type O blood in their children. The rhesus factor (Rhesus positive/rhesus negative) depends on the rhesus pairing in the parents as follows: Father rhesus positive, mother rhesus positive or rhesus negative = rhesus positive or rhesus negative Father rhesus negative, mother rhesus positive = rhesus positive or rhesus negative Father rhesus negative, mother rhesus negative = rhesus negative Example: A rhesus positive father and rhesus positive mother of blood type A and O respectively could produce an O positive child, as could a rhesus positive father and rhesus negative mother both of blood group O. Follow the link to an excellent site.
Can the baby of an O rhesus positive and a A rhesus negative parent be A rhesus positive?
no cause a positive and negative make a negative unless the positive has a really strong blood line
B Rhesus Positive Anti-P1 negative?
B rhesus positive anti-P1 negative
What blood type will the child be with parents blood type O positive father and mother O positive?
The baby can only be an O Blood Group as both parents can only be carrying 'O' type genes. The baby would have a 75% chance of being an O positive and a 25% chance of being an O negative. This is because the mother can only pass on a Rhesus negative gene but the father might either have two Rhesus positive genes or one Rhesus positive and one Rhesus negative. If the first is true the child will only be O positive, if the second is true it could be O positive or O negative depending on which gene the father passes.
Can blood be either B positive or negative?
Not exactly. Human blood may have positive (ca. 80%) or negative (remaining 20%) Rhesus factor. It means that that a substance known as Rhesus factor is either found or not in a human blood test. Transfusion of "positive" blood to a "negative" recipient may result in very negative consequences (but not vise versa) . A problem known as Rhesus conflict may arise when a Rhesus-negative woman is pregnant with a Rhesus-positive baby.The name Rhesus factor comes from Rhesus monkey in which it was first found.
What blood type will the child be with parents blood type o negative mother and father o positive?
The baby can only be an O Blood Group as both parents can only be carrying 'O' type genes. The baby would have a 75% chance of being an O positive and a 25% chance of being an O negative. This is because the mother can only pass on a Rhesus negative gene but the father might either have two Rhesus positive genes or one Rhesus positive and one Rhesus negative. If the first is true the child will only be O positive, if the second is true it could be O positive or O negative depending on which gene the father passes.
What produces rhesus negative blood in children?
I am a rhesus negative female. Both my parents had rhesus negatinve blood. I was a blue babie and had to have a blood transfusion. The second baby of 2 rh- parents is usually blue.
What is the universal recipient in blood transfusions?
AB positive; a person with rhesus-negative blood can have an adverse reaction if given rhesus-positive blood.
What does plus and - stand for in blood group?
positive and negative stands for either Rhesus Positive or Rhesus negative which means that a persons Red blood cells (RBC) either have D antigens on their cell surface membranes or not. a person who is Rhesus negative will have D Antibodies in the blood plasma and can only be given Rhesus negative blood types in a blood transfusion. Rhesus positive blood types can be given either D+ or D- in a blood transfusion as they have no D antibodies in their blood plasma. hope this helps
If parent both blood group B positive is there any health problem for child?
No. When the mother has a negative blood type and the father has a positive blood type, this could lead to Rhesus factor in the foetus. When both parents are positive blood group, there isn't a risk of becoming rhesus.
Can a child be O negative if both parents are O positive and three of the grandparents are O positive and one is B negative?
It is possible as the Rhesus factor is a dominant trait. So, even if the parents have only one allele for the factor, there is a 1/4th chance that the child could get neither allele from the parents and end up as O negative.
