Jill's Mother and Father Both Have Brown Eyes, Yet She

Multiple Choice

Jill's mother and father both have brown eyes, yet she has blue eyes. She has come to believe that she is not her parents' actual biological daughter. What would you tell her?

A) Her mother and father probably carry the recessive trait for blue eyes.
B) She is correct; there is no way that she would have blue eyes if she were really her parents' biological daughter.
C) Blue eyes are dominant, so her parents should have blue eyes too.
D) Only the environment determines eye colour once the foetus has been born.