The ability to roll the tongue sideways (A) is dominant over theinability to roll one’s tongue (a). In humans, non-attachedearlobes (B) are dominant over attached earlobes (b). Two parentswith attached earlobes can roll their tongues. They are bothheterozygous for the tongue rolling trait.

    What is the genotype of the mother?
    What is the genotype of the father?
    What are the possible gametes from the mother?
    What are the possible gametes from the father?
    Draw the Punnett square, and combine the gametes to produceoffspring
    What is the phenotypic ratio of these offspring?