IA and IB is dominant to ii or sometimes preferred IO.
In human beings blood group is determined by four alleles IA, IB, Ii A gene contain only two alleles either IA IA-- result A group IA IB--- result AB group- because of the phenomenon of co-dominance IA Ii---- result A group- A is dominant over i IBIi--- result B group- B is dominant over i IB IB-- result B group Ii Ii-- result O group dr.sreejithnamboodiri@gmaill.com
a person with AB blood group exhibits a genetic principle called "co-dominance" Explanation there are three genes responsible for the four human blood groups i.e. A, B, O and AB. the genes are Ia, Iband Io. Ia and Ib are dominant genes while Iois a recessive gene. if a person has the genotype IaIa or IaIo he/she will exhibit the blood group "A" similarly a person with genotype IbIb or IbIo will show the blood group "B". But a person with genotype IoIo will show the blood group "O"( IoIo is a homozygousrecessive condition ) since Ia and Ib are dominant genes they express themselves in both homozygous dominant (IaIa and IbIb) condition and heterozygous dominant(IaIo and IbIo) condition. but when the genotype of a person becomes IaIb neither of Ia or Ib genes is able to dominate the other. This is when the principle called "co-dominance" is observed in which both the genes Ia and Ib express themselves to give rise to "AB" blood group.hope i could provide a satisfactory answer ! good luck !!
IA
The human ABO blood group system is a good example of multiple alleles. There are three alleles involved: IA, IB and IO. If a person inherits two IA alleles, or IA and IO, they will be group A. If they inherit two IB alleles, or IB and IO, they will be group B. If you inherit two IO alleles you will be group O.
The IA and IB alleles code for the A and B antigens on the membranes of erythrocytes. These two antigens can exist together, as in a person with the AB blood type. Since the two alleles can express their character simultaneously, they are considered codominant.
the human blood type is controlled by the gene 'I'. It is of 3 types Ia, Ib and i. the alleles 'Ia' and 'Ib' produce slightly different sugar polymers protruding on its surface while the 'i' doesn't produce any sugar polymers. as humans are haploid the contain 2 alleles out of the 3 I gene alleles, as the individual alleles come from the parent gamete. the alleles 'Ia' and 'Ib' are completely dominant over 'i', i.e, if alleles 'Ia' and 'i' are present then only the allele 'Ia' will be expressed, and the same for 'Ib' and 'i' happens, but when 'Ia' and 'Ib' are present together then they both express their own types, this is because of the co-dominance. Ia + Ia = IaIa = A Ia + Ib = IaIb = AB Ia + i = Iai = A Ib + Ia = IbIa = AB Ib + Ib = IbIb = B Ib + i = Ibi = B i + i = ii = 0 (zero commonly known as O)
In human beings blood group is determined by four alleles IA, IB, Ii A gene contain only two alleles either IA IA-- result A group IA IB--- result AB group- because of the phenomenon of co-dominance IA Ii---- result A group- A is dominant over i IBIi--- result B group- B is dominant over i IB IB-- result B group Ii Ii-- result O group dr.sreejithnamboodiri@gmaill.com
No, only in a perfect world
Ia Ib
Ia Ib
IA
a person with AB blood group exhibits a genetic principle called "co-dominance" Explanation there are three genes responsible for the four human blood groups i.e. A, B, O and AB. the genes are Ia, Iband Io. Ia and Ib are dominant genes while Iois a recessive gene. if a person has the genotype IaIa or IaIo he/she will exhibit the blood group "A" similarly a person with genotype IbIb or IbIo will show the blood group "B". But a person with genotype IoIo will show the blood group "O"( IoIo is a homozygousrecessive condition ) since Ia and Ib are dominant genes they express themselves in both homozygous dominant (IaIa and IbIb) condition and heterozygous dominant(IaIo and IbIo) condition. but when the genotype of a person becomes IaIb neither of Ia or Ib genes is able to dominate the other. This is when the principle called "co-dominance" is observed in which both the genes Ia and Ib express themselves to give rise to "AB" blood group.hope i could provide a satisfactory answer ! good luck !!
If by heterozygous you mean someone has one allele for A (AA or Aa) type blood and one for O (ii), though a third allele, for type B, is also a possibility. If the parents are AA X Ai (phenotype would be A for both) then possibilities for the offspring are: Ai and AA, and all will be type A. If it's AA (A Blood) x AB (AB blood), then their children will be either AA or AB.
Your momma is a either AB or B type. I'm not sure whether it is positive or negative though. I would assume positive. O = i i genotype A = Either Ia Ia or Ia i B= either Ib Ib or Ib i AB = Ia Ib since you're father is ii, you HAVE to be Ib i.
There are three alleles for blood type which can be represented by IA, IB, and i. A person with blood type O has the genotype ii. A person with blood type AB has genotype IAIB. If these two people produce children, those children will inherit one allele from each parent. They will therefore certainly inherit the i allele from their mother and either the IA or the IB from their father. The children with the genotype IAi will have type A blood, since the IA allele is dominant to the i allele. The children with the genotype IBi will have type B blood, since the IB allele is also dominant to the i allele.
Ia Ib
The human ABO blood group system is a good example of multiple alleles. There are three alleles involved: IA, IB and IO. If a person inherits two IA alleles, or IA and IO, they will be group A. If they inherit two IB alleles, or IB and IO, they will be group B. If you inherit two IO alleles you will be group O.