If you are in a class of several hundred people, and you share an unusual family name with another student in the class, it is best if your reply to an open ended short-answer question is not identical, word-for-word. This is particularly true when the answer is wrong, and when it is wrong in an idiosyncratic way. Many profs, as I do, grade “blind,” without reference to the names of the students, but still, it’s easy enough when you find something like this to track back to the names. My suggestion, in this case, is to continue to cut and paste the answer, but to legally change your name. A convenience marriage may do the trick.