Before I delve into the science, let me quickly stop any tongues that might be wagging if you are asking about a paternity debate: Yes, two O-positive parents could have any number of O-negative children.
In this case, the most likely explanation is that dad is a carrier for being Rh- and mom is a carrier for blood type O. What happened was that dad and mom each passed both an O and an Rh negative to the baby. The end result is an O negative child.
For example, two O blood type parents can produce a child with only O blood type. Two parents with A blood type can produce a child with either A or O blood types. Two parents with B blood type can produce a child with either B or O blood type.
Yes, you can. The end result is for both of you to have an O negative child who will be perfectly healthy.
Two O parents will get an O child nearly all of the time. But as with anything in biology, there are occasional exceptions to this rule. New mutations -- or changes in the DNA -- are theoretically one way these kinds of uncommon scenarios can happen. Keep in mind, though, that mutations are very rare.
Rh incompatibility occurs when the mother's blood type is Rh negative and her fetus' blood type is Rh positive.
Only 7% of the population are O negative. However, the need for O negative blood is the highest because it is used most often during emergencies. The need for O+ is high because it is the most frequently occurring blood type (37% of the population). The universal red cell donor has Type O negative blood.
As a result, their child could wind up as type O if the other parent passes them an O-type gene, too. That last fact explains how O-positive parents can have O-negative kids. In addition to the A-B-O system, humans also have what is known as an Rh factor, which was first discovered in the rhesus monkey (hence, Rh).
Those with O positive blood can only receive transfusions from O positive or O negative blood types.
A baby may have the blood type and Rh factor of either parent, or a combination of both parents. Rh factors follow a common pattern of genetic inheritance. The Rh-positive gene is dominant (stronger) and even when paired with an Rh-negative gene, the positive gene takes over.
No, siblings don't necessarily have the same blood type. It depends on which parent passes along their "genotype" - or gene pool - for determining what you are made up of: either AO (like apostle), BO (both parents) encoding an individual with Type AB positive and negative varieties; AA where both carry genotypes O+.
Why is O negative blood important? O negative blood is often called the 'universal blood type' because people of any blood type can receive it. This makes it vitally important in an emergency or when a patient's blood type is unknown.
Those with blood type O may struggle to conceive due to a lower egg count and poorer egg quality, while those with blood group A seem to be more fertile.
Sometimes an incompatibility may happen when the mother is blood type O and the baby is either A or B. This can affect the newborn baby, who may need treatment after birth.
O negative blood is missing both the A antigen and the B antigen and does not contain the protein for Rh positive blood. This means that it's missing those things that could cause a bad reaction during a blood transfusion and can be given to any blood type.
Fertility: a small study (544 women) performed did suggest that women with blood type O may be at a higher risk for what's called “diminished ovarian reserve.” More studies are needed in order to better understand this, so if you have blood type O, don't panic just yet.
Type O-positive blood can be transfused to any positive blood type: A-positive, B-positive, AB-positive, and of course other O-positives. Patients with O-positive blood can receive blood transfusions from other O-positives or O-negative donors. The ideal donation types for O+ donors are whole blood or Power Red.
However, it's also possible for those same parents to have a RhD-negative child if they both pass on their negative gene to their baby. If one parent is RhD-negative and one parent is RhD-positive but carrying a negative gene (-- and +-), there is an 50/50 chance that the baby could be RhD-positive or RhD-negative.
O-negative blood type is most common in the U.S. among Caucasian adults, at around eight percent of the Caucasian population, while only around one percent of the Asian population has O-negative blood type.
How common is O positive blood? O positive is the most common blood type as around 35% of our blood donors have it. The second most common blood type is A positive (30%), while AB negative (1%) is the rarest.
Of the eight main blood types, people with Type O have the lowest risk for heart attacks and blood clots in the legs and lungs. This may be because people with other blood types have higher levels of certain clotting factors, which are proteins that cause blood to coagulate (solidify).