Review Question - QID 215526

A 9-year-old female is evaluated in your clinic with complaints of multiple bony prominences in her legs that cause her pain. Her father, who accompanies her, states he had a similar complaint at her age. He says he required surgery for removal of these bony prominences when he was younger. He also required a hemiepiphysiodesis when he was a teenager to correct an angular deformity of his lower extremity. This patients radiograph is shown in Figure A. Given this patient's presentation and family history, you initially recommend molecular genetic testing. Which of the following genetic findings would most likely be seen?