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