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': 'DNA fingerprinting is based on possessing in DNA of \nSelect and explain. \nA. Constant tandem repeat, B. Variable number tandem repeats, C. Non-repetative sequence, D. Exon', 'role': 'user'}, {'content': 'Answer: B \nExplanation: These are tandem repeatsThese are sho sequence of DNA located at scattered sites The no. Of these repeat units varies from person to person but is it unique for paicular personProbability of similarity between two people is only 1 in 3*10^10 personsRef: DM Vasudevan, 7th edition, page no: 637', 'role': 'assistant'}]