Can blood type A be heterozygous?
Can blood type A be heterozygous?
Problem 11: Codominant alleles: The human ABO markers The possible human phenotypes for blood group are type A, type B, type AB, and type O. Type A and B individuals can be either homozygous (IAIA or IBIB, respectively), or heterozygous (IAi or IBi, respectively).
What does heterozygous for type A blood mean?
ABO Blood Types The A and B alleles are dominant to the O allele. When one of the inherited alleles is A and the other is B, the genotype is heterozygous and the blood type is AB. AB blood type is an example of co-dominance since both traits are expressed equally. Type A: The genotype is either AA or AO.
Can a woman with type A blood and a man with type A blood produce a blood type O child?
One parent with A and another with B can produce a child with A, B, AB or O blood types. If one parent has A and another has AB, they can either produce a child with A, B or AB blood types. If one parent has A and another has O, they can either produce a child with A or O blood types.
What genotype is blood type A?
If someone has blood type A, they must have at least one copy of the A allele, but they could have two copies. Their genotype is either AA or AO. Similarly, someone who is blood type B could have a genotype of either BB or BO. A blood test of either type AB or type O is more informative.
What blood type is iAiA?
The following genotypes will yield these blood types: • iAiA or iAi – Both genotypes produce the A protein (type A). iBiB or iBi – Both genotypes produce the B protein (type B). iAiB – This genotype produces the A and B protein (type AB). ii – This genotype produces no protein (type O).
What blood type is II?
| Genotype | Blood Type | Blood Proteins |
|---|---|---|
| i i | Type O | None |
| IA IA | Type A | A |
| IA i | Type A | A |
| IB IB | Type B | B |
How many percent of their offspring will be blood type A?
If the father is heterozygous, there is a 50% probability for a blood type A child and a 50% probability for a blood type O child. If the father is homozygous, every offspring will be blood type A.
WHAT IS II blood type?
Ii blood group system, classification of human blood based on the presence of antigens I and i on the surface of red blood cells. The Ii blood group system is associated with cold antibodies (antibodies that function only at temperatures below normal body heat) and several blood diseases.
Can a heterozygous blood type have an AO child?
O is a recessive type … so if you are typed as an A, you can be either heterozygous Ao or homozygous AA. You can have an O child if you have heterozygosities (Ao) but you can’t if you are a homozygous type A (A:A)
How many genotypes are there for ABO blood type?
There are six possible genotypes (genetic makeup of inherited alleles) and four phenotypes (expressed physical trait) for human ABO blood types. The A and B alleles are dominant to the O allele. When both inherited alleles are O, the genotype is homozygous recessive and the blood type is O.
What does a heterozygous blood type mean for a person?
Offspring have a 50% chance to be type A, 25% chance to be type AB, and a 25% chance to be type B. However, if the man is homozygous (genotype AA), then: AA x AB = AA, AB. Offspring will have a 50% chance to be type A, and 50% chance to be type AB.
Can a universal donor be an O Negative blood type?
Universal donors are those with an O negative blood type. Why? O negative blood can be used in transfusions for any blood type.
There are six possible genotypes (genetic makeup of inherited alleles) and four phenotypes (expressed physical trait) for human ABO blood types. The A and B alleles are dominant to the O allele. When both inherited alleles are O, the genotype is homozygous recessive and the blood type is O.
Universal donors are those with an O negative blood type. Why? O negative blood can be used in transfusions for any blood type.
What are the possible phenotypes for a blood group?
The possible human phenotypes for blood group are type A, type B, type AB, and type O. Type A and B individuals can be either homozygous (IAIA or IBIB, respectively), or heterozygous (IAi or IBi, respectively).
Can a mother and father of blood group O have children?
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).