This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Metabolism of nucleic acids, Subject name: Biochemistry
[{'content': 'Transposons are \nSelect and explain. \nA. Jumping genes, B. Cosmid, C. Episome, D. None', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Transposons are segments of DNA that can move around to different positions in the genome of a single cell. In the process, they may cause mutations increase (or decrease) the amount of DNA in the genome of the cell, and if the cell is the precursor of a gamete, in the genomes of any descendants. These mobile segments of DNA are sometimes called "jumping genes". Ref-Sathyanarayana 4/e', 'role': 'assistant'}]