The ABO blood group is one set of antigens Another antigen t

The ABO blood group is one set of antigens. Another antigen that medical professionals will check is the Rh factor. There are two alleles in the human population: Rh⁺ allele expresses the antigen and is completely dominant over the Rh^- allele, which does not. Using this information, what would be the expected phenotypes and ratios of children of the following couple: I^AI^BRh⁺Rh^- x I^BI^ORh^-Rh^-.

Solution

Answer:

I^AI^BRh⁺Rh^- x I^BI^ORh^-Rh^-.

I^B Rh^-

I^ORh^-

I^A Rh⁺

I^A I^B Rh⁺ Rh^- (AB⁺)

I^AI^O Rh⁺ Rh^- (A⁺)

I^A Rh^-

I^A I^B Rh^-Rh^- (AB^-)

I^A I^O Rh^-Rh^- (A^-)

I^B Rh⁺

I^B I^B Rh⁺ Rh^- (B⁺)

I^B I^O Rh⁺ Rh^-(B⁺)

I^B Rh^-

I^B I^B Rh^- Rh^- (B^-)

I^B I^O Rh^- Rh^- (B^-)

AB⁺ : AB^- : A⁺ : A^- : B⁺ : B^- = 1/8 : 1/8 : 1/8 : 1/8 : 2/8 : 2/8

Phenotypic Class

Ratios

AB⁺

1/8

AB^-

1/8

A⁺

1/8

A^-

1/8

B⁺

2/8

B^-

2/8