This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Basics of genetics, Subject name: Biochemistry
[{'content': 'Which of the following is the smallest autosome? \nSelect and explain. \nA. Chromosome 1, B. Y chromosome, C. Chromosome 21, D. Chromosome 22', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Karyotyping Chromosome visualisation technique in which chromosome pairs are arranged in decreasing order of size except chromosome 21 & 22. Feature Chromosome no. The largest chromosome 1 The smallest chromosome Y The smallest autosome 21', 'role': 'assistant'}]