Blood Type Gene Chart

December 13, 2020

Our immune system is trained to recognize foreign substances in our body. I have a b blood type.

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This list concerns blood type distribution between countries and regions blood type also called a blood group is a classification of blood based on the presence and absence of antibodies and inherited antigenic substances on the surface of red blood cells rbcs.

Blood type gene chart. Specific blood type is determined by a single gene locus with three different alleles an allele is an alternative form of a gene which we will refer to as the a b and o alleles. These antigens may be proteins carbohydrates glycoproteins or glycolipids depending on the blood group system. Your child may obtain the a gene from both parents 25 chance of a blood type the b gene from both parents 25 chance of b phenotype or one of each 50 chance of ab.

Aa ab ao bb bo and oo. Since a normal individual has two copies of each gene one from each parent he or she has six different possible genotypes. My daughter is o and my son is b.

The rh factor is inherited separately from the abo blood types. The height of a child cannot be predicted using the punnett square method there are too many variables and genes affecting this trait. Its importance it acquired with the development of genetics and immunohisto chemistry which could justify absolutely paradoxical cases in medical practice.

The a and b blood types are co dominant. However a child can have a different blood type to both of their parents depending on which genes they inherit. Similarly to the masking effect of the o gene in abo blood types the rh negative rh gene is also masked by the presence of a rh positive rh genotype.

The child s blood type will depend on which genes they obtain. The rh factor is inherited separately from the abo blood types. Therefore a person may have a rh blood type and can still have an rh gene see the chart below.

The blood type inheritance makes a good example of a trait that is perfect to use in the punnett square calculator. Compatibility of blood type and rh factor a relevant topic in modern medicine. There are four major blood groups determined by the presence or absence of two antigens a and b on the surface of red blood cells.

Therefore a person may have a rh blood type and can still have an rh gene see the chart below. In addition to the a and b antigens there is a protein called the rh factor which can be either present or absent creating the 8 most common blood types a a b b o o ab ab. Similarly to the masking effect of the o gene in abo blood types the rh negative rh gene is also masked by the presence of a rh positive rh genotype.

The a gene for blood type codes for type a antigen the b gene codes for b antigens and the o gene codes for no antigens. Blood type is a genetic trait.

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