A parent of blood type O is homozygous recessive for the i allele.
Is type O recessive or dominant?
ABO Blood Type
The A and B genes are dominant and the O gene is recessive. For example, if an O gene is paired with an A gene, the blood type will be A.
Is blood type O heterozygous or homozygous?
Note that there are two genotypes for both “A” & “B” blood — either homozygous (IAIA or IBIB) or heterozygous with one recessive allele for “O” (IAi or IBi). Note too that the only genotype for “O” blood is homozygous recessive (ii).
Is blood type O heterozygous?
The IA and IB alleles are codominant, and the i allele is recessive. 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 type of inheritance is blood type O?
The ABO blood type is inherited in an autosomal codominant fashion. The A and B alleles are codominant, and the O allele is recessive.
What blood type is iBi?
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).
Can only receive blood from a type O donor?
Donors with blood type O… can donate to recipients with blood types A, B, AB and O (O is the universal donor: donors with O blood are compatible with any other blood type)
What is an example of heterozygous?
Your genes are made of DNA. … If the two versions are different, you have a heterozygous genotype for that gene. For example, being heterozygous for hair color could mean you have one allele for red hair and one allele for brown hair.
What will the offspring’s blood type be if the mother is type O and father is type O?
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.
How are ABO alleles inherited by our children?
|Inherited||Blood type of child|
|O from the mother B from the father||B|
What are the 3 alleles for blood type?
The four main blood groups A, B, AB, and O are controlled by three alleles: A, B, and O. As humans are diploid, only two of these can be present in any one genotype. In other words, only two of these alleles are present at the same time in a person’s cell.