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2K views 7 replies 5 participants last post by  Hopefulhelpful 
#1 ·
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
 
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