Question

Free earlobes are dominant over attached earlobes in humans. Grace is Ee for earlobes. She marries Mark, who is ee for earlobes. What is the probability that their son will have attached earlobes?

25%
75%
100%
50%

Answer 1

I am pretty sure the answer would be 50%

Answer 2

50%
Using a generic square as seen in my picture below it is a 50% chance in both the dominant and recessive trait.