Question

Rh positive blood is dominant to Rh negative blood. A child with AB negative blood and a child with O negative blood are produced from parents that are A positive and B positive respectively. Show the genotypes of the parents involved in this cross and the resulting punnet

Answer 1

The genotypes of the parents involved in this cross are A positive (IAIA) and B positive (IBi). The resulting punnet square would look like this:

A Positive (IAIA) B Positive (IBi)

A Positive (IAIA) AA, AO

B Positive (IBi) AO, BB

The resulting possible genotypes of the children produced from this cross would be AB negative (IAi) and O negative (ii).