This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Genetics, Subject name: Pathology
No change of genetic material occurs in which of the following cytogenetic abnormalities? 
Select and explain. 
A. Deletion, B. Inseion, C. Translocation, D. Inversion
D: Inversion
Answer: D: Inversion 
Explanation: Inversion Rearrangement that involves two breaks within a single chromosome with reincorporation of the inveed, intervening segment. Not associated with change in genetic material.