⚙️ how
How is a blood type inherited?
Human BiologyGenetics
Quick Answer
Blood type is inherited from your parents through the ABO and Rh systems. You receive one version of each gene from each parent, and those versions combine to determine your blood group.
The Full Story
In the ABO system, the main alleles are A, B, and O. A and B are codominant, which means if you inherit both, your blood type is AB; O is recessive, so two O copies are needed for type O. The Rh system, especially the RhD factor, is usually described as positive or negative depending on whether the antigen is present. Because each parent contributes one copy of the relevant genes, a child’s blood type can often be predicted from the parents’ possible combinations.
Key Facts
1.ABO blood groups are controlled by inherited alleles
2.A and B are codominant; O is recessive
3.Rh positive means the RhD antigen is present
YouTube Angle
Suggested video title for this topic:
"Why your blood type is a genetic mix from both parents."