Problem: There are three alleles for eye color in monsters: red, black and white. The red and white alleles are incompletely dominant to each other, but both alleles are dominant to the black allele.
Petey (a black eyed monster) and a Sissy (a pink eyed monster) have three
Monsterlings: Timmy, Bitsy and Helga. Timmy has black eyes; Bitsy has white eyes and Helga has red eyes. Two of the monsterlings are biological, and one is adopted.
Which monsterling is adopted? Clearly explain how you determined this using a Punnett square to support your reasoning.