In humans, the gene for a free earlobe (E) is dominant over the gene for an attached earlobe (e). If one parent has a free earlobe (Ee) and the other parent has an attached earlobe (ee), what is the probability that their offspring will have an attached earlobe?
three of the offspring EE, Ee, and Ee have free earlobes. One offspring, ee, has attached earlobes. The probability of having offspring with free earlobes then is 3/4; for attached earlobes, it is 1/4
