Blood Type Heredity Table

December 09, 2020

Each biological parent donates one of two abo genes to their child. The rh factor is inherited separately from the abo blood types.

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Just like eye or hair color our blood type is inherited from our parents.

Blood type heredity table. Blood inheritance abo blood type. A b and o. Blood types a and b are called codominant alleles they share in the controlling influence of our genetic blood make up while o is recessive.

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. There are three blood genes. There are three common blood type alleles.

The 4 pairs of alleles in smaller font are the genotypes based on the parental alleles. 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. These antigens may be proteins carbohydrates glycoproteins or glycolipids depending on the blood group system.

The possible combinations of the three alleles are. I m going to ignore the and part of this a and b are dominant and o is recessive. Otherwise a or b dominate or are codominant as type ab.

Everyone has an abo blood type a b ab or o and an rh factor positive or negative. 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. The a and b genes are dominant and the o gene is recessive.

Abo and rh are the most well known among the blood group systems. We all have two alleles one inherited from each parent. Table 1 blood group inheritance from parents to offspring.

Inheritance of blood types. Therefore a person may have a rh blood type and can still have an rh gene see the chart below. A b and o.

Chart showing the possible blood types for offspring. Blood groups are inherited from our parents in the same way as other genetic traits eg eye colour. In the united states o is the most common blood type found in about 37 of the population followed by a in around 36 of people according to the stanford school of medicine blood center.

You inherit one blood gene from your mother and one from your father. Note the only way the result will be type o with no other possibility is when both parents are homozygous recessive for type o. 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.

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