> What determines Rh + or - phenotype? Is it a simple dominant vs.
> recessive trait or something more complex?
> -MT
Actually, its quite bit more complicated than that. There are three Rh
antigens (D Cc, and Ee) and two alternatively spliced structural genes
(RHD and RHCE). For a good review, see JP Cartron, "Defining the Rh
blood group antigens. Biochemistry and Molecular Genetics" Blood Rev. 8:
199-212 (1994). Cheers. -- Dom Spinella
