AB and AB blood type parents can produce a toddler with only AB blood group. Mother and father with AB blood group can either pass the A or B allele to the baby. AB is co dominant and O is recessive so in these types genotype offspring didn't show O blood type.
Answer and Explanation: An individual with blood type O cannot have children with blood type AB. Type O blood is controlled by a recessive gene which means that an individual with type O blood is homozygous for the gene.
If mom passes her O and so does dad, then the child will be OO which is O type blood. Each parent has a 50% chance of passing down the O gene. So each child has a 25% chance of ending up with an O blood type.
Yes … O is recessive, A and B are dominant …. it would only be impossible if one of them were homozygous AA or BB. Heterozygous genotypes Ao and Bo still type to the dominant A, or B gene, but 25% of their children will be O.
The correct answer is (c) AB. A child with type O blood would need to receive a copy of the recessive O allele from each parent. Of the listed choices, a parent with blood type AB could only pass an A allele or a B allele, not an O allele, on to their 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.
“Blood type has to be OO in order to be expressed as O,” says Seitz. So, a child needs two O genes in order to have type O blood. One parent could be AO and the other parent could be BO, and if each gives their O the child will be OO.
To be O, you usually need to get an O from both mom and dad. But an AB parent usually has an A and a B version, not an O. So they usually can't have an O child.
So based on probability, 25%probability each of baby being A, B, AB or O. Similarly for Rh factor inheritance, assuming you both were Rr, you have 25% chance for RH negative baby. To conclude.. its possible for a A+ and B+ couple to have O- baby. You are proud parents of a universal donor.
Even though both parents still have blood type A, Dad can pass on either his A or his O gene version. Mom can also either pass on her A or her O. Because of this, you can see that there's 1 in 4 or 25% chance for a child to have OO, or blood type O.
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.
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.
Rh incompatibility occurs when the mother's blood type is Rh negative and her fetus' blood type is Rh positive. Antibodies from an Rh negative mother may enter the blood stream of her unborn Rh positive infant, damaging the red blood cells (RBCs).
A person who is blood type O has to be genetically OO (receiving a gene that codes for neither A nor B from one parent and a gene that codes for neither A or B from another parent).
When a woman is Rh negative and her fetus is Rh positive, it is called Rh incompatibility. Why is Rh incompatibility a problem? When the blood of an Rh-positive fetus gets into the bloodstream of an Rh-negative woman, her body will recognize that the Rh-positive blood is not hers.
If two parents both have type O blood, all their children will have type O blood.
An O and B crossing can not produce an A or AB child. An AB with an O can produce A children or B children but not O. In short the ABO system can prove you are not a parent but not that you are, as there are millions of other people with the same blood group.
Most of the time, being Rh-negative has no risks. But during pregnancy, being Rh-negative can be a problem if your baby is Rh-positive. If your blood and your baby's blood mix, your body will start to make antibodies that can damage your baby's red blood cells. This is known as Rh sensitization.
Yes, Mom or Dad may be positive, but that recessive negative gene is still floating around in his or her DNA. If it becomes paired with another negative gene from a similar positive-negative parent, that child will be negative even though both parents are positive. It's an everyday occurrence, says pediatrician Dr.
Theoretically yes, but it would be extremely rare. 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.
38% of the population has O positive blood, making it the most common blood type.
Brothers and sisters don't always share the same blood type. The genotype of both parents plays a role in defining the blood type. For instance, children of parents with the genotypes AO and BO may have the blood types A, B, AB, or O. Thus, siblings do not necessarily have the same blood type.
A mother who is blood type O can only pass an O allele to her son or daughter. A father who is blood type AB could pass either an A or a B allele to his son or daughter. This couple could have children of either blood type A (O from mother and A from father) or blood type B (O from mother and B from father).