Is Ab Blood Type Codominance

Codominance and multiple alleles

Dominance is a relationship between two alleles of 1 gene that affect the phenotype of ane allele and masks the contribution of some other allele.

The trait which is expressed in a phenotype is chosen the dominant trait and the suppressed 1 is called a recessive trait. Incomplete dominance is a type of dominance where a trait incompletely dominates over the other and results in an intermediate progeny.

Co-dominance

Co-authority is the type of authority where the offspring evidence similarity to both the parents and it is due to the blending of alleles.

Let us learn more nearly codominance in the coming lines.

When the F ane generation exhibits both the parental characters, this is called codominance. The offspring will exist a combination of both the parent. The ABO blood group arrangement is i of the all-time examples of codominance.

There are different types of ruddy blood cells such as A, B, AB and O with or without the Rh gene. The deviation is in the antigen present on the reddish blood cell surface which determines the specific blood group in an organism.

For example: If a person is claret group A, it means the RBC surface consists of antigen-A. But this is decided by the cistron I. The gene I have three types of alleles namely, I A , I B and i. The alleles I A and I B produce two different antigens while the allele-i do not produce any antigen. Hence, alleles I A and I B are dominant over the allele i.

As nosotros know, each diploid organism bears two pairs of alleles. Hence, in humans, there are two types of alleles of whatsoever combination. Depending on the combination and authorisation of allele blood type of an individual could exist determined. The dissimilar combination of alleles and their blazon of blood groups are given below.

In the above example, A person with blood grouping A indicates that he has an I A and i pair of alleles. This is because the allele i is recessive in character and no antigen is produced. Still, a person who possess both the alleles I A and I B , they have blood group AB. This is considering of alleles I A and I B are codominant. Both the cistron will produce their blazon of antigen.