Question

What is the MN blood system? What is the pattern of genetic inheritance of the MN...

What is the MN blood system? What is the pattern of genetic inheritance of the MN blood system?

Homework Answers

Answer #1

Three system of blood antigens :
1) ABO
2) Rh
3) MN blood system is a 3rd system of blood antigens. It is also related to proteins in the red blood cell plasma membrane. This blood system is due to a glycoprotein which is present on the surface of red blood cells and behaves as a native antigen.

The pattern of genetic inheritance of the MN blood system is autosomal with codominance. It is a type of lack of dominance in which the heterozygous individual manifests a phenotype that is totally different from that of the homozygous individual.

The possible phenotypes are three blood types:

- type M blood
- type N blood
- type MN blood.

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