A 4-month-old female is brought to her pediatrician by her mother who is concerned about some photographs she recently had developed. In the photographs, only the child’s right eye demonstrates a red reflex. Examination of the left eye confirms absence of a red reflex. Which of the following mechanisms is most likely involved?
A. Deletion in the long arm of chromosome 13
B. Deletion in the short arm of chromosome 5
C. Deletion of the short arm of chromosome 11
D. Nondisjunction of chromosome 18
E. Nondisjunction of chromosome 21
A. Deletion in the long arm of chromosome 13
B. Deletion in the short arm of chromosome 5
C. Deletion of the short arm of chromosome 11
D. Nondisjunction of chromosome 18
E. Nondisjunction of chromosome 21