The ability to taste bitterness in certain foods such as green tea or coffee depends on the T allele, which is dominant to non-tasting (tt). Two siblings are born to a set of parents that both find coffee too bitter for their liking, but one of the siblings love coffee, tea, dandelion greens, and other foods and the other does not. The sibling that dislikes coffee has a child with a person who loves coffee. What is the probability that their child (the [F2] grandchild of the original parents) will like coffee?