This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Types of Genetic Disorders, Subject name: Pediatrics
What is the name of this chromosomal abnormality? 
Select and explain. 
A. Translocation, B. Telomeric fusion, C. Isochromosome, D. Ring chromosome
D: Ring chromosome
Answer: D: Ring chromosome 
Explanation: Ring chromosome: 2 break point event involving the ends of p & q arms, which leaves 2 sticky chromosomal ends that join to become a ring Isochromosome- During mitotic division, chromosome divides transversely Translocation- A segment of chromosome breaks off from parent chromosome & join another chromosome