In the maternity ward, Mrs. Bright and Mrs. Light share a room. When they were ready to go home, Mrs. Bright insisted that she had been given the wrong baby. The babies
looked very much alike, and unfortunately, no one could find a record of the babies'
footprints. Hospital officials told Mrs. Bright she was mistaken, and sent her and the
baby home. Mrs. Bright eventually asked the hospital to perform identification tests.
Several weeks later, the blood tests showed the following data.
Family Member Blood Type Family Member
Blood Type
Mrs. Bright
Group AB Mrs. Light
Group A
Mr. Bright
Group O
Mr. Light
Group A
Baby at Bright's House Group O Baby at Light's House Group A
What is Mrs. Light's phenotype?