0
What else can I help you with?
Why are IA and IB alleles considered codominant?
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.
In a heterozygous IA i person which allele is dominant IA or i?
In a heterozygous IAi person, the IA allele is dominant over the i allele. This means that the phenotype will show the IA allele's trait as it masks the expression of the recessive i allele.
What principle does a person with AB blood illustrate?
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 !!
How do alleles make it possible for humans to have four different traits for blood type?
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
What genes are a good example of multiple alleles?
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.
How many genes are involved i determining your blood type?
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)
A child who inherits IA from his mother and IB from his father will have type?
A child who inherits the IA allele from their mother and the IB allele from their father will have type AB blood. This is because the IA and IB alleles are co-dominant, meaning that both alleles are expressed equally in the phenotype. As a result, the child will exhibit characteristics of both blood types, leading to the AB classification.
Does IA IA and IA IB result in the same phenotype?
No, only in a perfect world
What is AB blood type?
Ia Ib
What ab blood type?
Ia Ib
Why are IA and IB alleles considered codominant?
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.
How do you cross blood types on a punnet?
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.
How do you find the possible genotypes of the children of a woman with blood type O and a man with blood type AB?
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.
What are genotype of blood typE ABO blood system?
Ia Ib
In a heterozygous IA i person which allele is dominant IA or i?
In a heterozygous IAi person, the IA allele is dominant over the i allele. This means that the phenotype will show the IA allele's trait as it masks the expression of the recessive i allele.
How are co dominant alleles expressed?
co dominant alleles are expressed as IA
What principle does a person with AB blood illustrate?
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 !!
