This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: general microbiology, Subject name: Microbiology
Jumping gene is ? 
Select and explain. 
A. Transposon, B. Episome, C. Cosmid, D. Plasmid
A: Transposon
Answer: A: Transposon 
Explanation: A transposable element (Jumping gene) is a DNA sequence that can change its position within a genome, sometimes creating or reversing mutations and altering the cell's genetic identity and genome size. They are implicated in gene regulation and chromatin organization, but their function is still not well established. REF:Robbins 9edition pg: no. 2