This is a Punnett square for<unk>  factor inheritance. This square specifically shows two heterozygous<unk>  positive parents and the possible genotypes/phenotypes the offspring could have. The D antigen is inherited as one gene <unk> D) (on the short arm of the first chromosome, p36.13–p34.3) with various alleles. Typically,<unk> esus positve people have an intact<unk> D gene while negative people lack the gene (or have mutations in it). However, there are exceptions: for instance, Japanese and African blacks may have an intact gene that is not expressed or only at very low levels. The gene codes for the<unk> D protein on the red cell membrane. D− individuals who lack a functional<unk> D gene do not produce the D antigen, and may be immunized by D+ blood. The D antigen is a dominant trait. If both of a child's parents are<unk>  negative, the child will definitely be<unk>  negative. Otherwise the child may be<unk>  positive or<unk>  negative, depending on the parents' specific genotypes. The epitopes for the next 4 most common<unk>  antigens, C, c, E and e are expressed on the highly similar<unk> CE protein that is genetically encoded in the<unk> CE gene, also found on chromosome 1. It has been shown that the<unk> D gene arose by duplication of the<unk> CE gene during primate evolution. Mice have just one<unk>  gene. The<unk> AG gene, which is responsible for encoding<unk> -associated glycoprotein <unk> AG), is found on chromosome 6a. The polypeptides produced from the<unk> D and<unk> CE genes form a complex on the red blood cell membrane with the<unk> -associated glycoprotein.
Rh blood group system
Junior blood group system
Vel blood group
Hh blood group
Sid blood group system
Augustine blood group system
Lan blood group system
Indian blood group system