【单选题】Pamela is a young mother whose parents are both deceased. Assuming that disease X is a genetic disorder with either a dominant or a recessive inheritance pattern, which of the following statements is ...
A.
If neither of Pamela’s parents ever had disease X, then Pamela does not and never will have disease X.
B.
If neither Pamela nor the father of Pamela’s child has disease X, then that child will never have disease X.
C.
If both of Pamela’s parents had at least one copy of the disease X gene,then Pamela also has at least one copy of the disease X gene.
D.
If neither of Pamela’s parents ever had disease X, but Pamela has disease X,then disease X is not a dominantly inherited genetic disorder.