This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Introduction, Subject name: Pathology
[{'content': 'Y-chromosome is: \nSelect and explain. \nA. Telocentric, B. Metacentric, C. Submetacentric, D. Acrocentric', 'role': 'user'}, {'content': "Answer: D \nExplanation: Y chromosome is Acrocentric. X chromosome is Submetacentric. IMG showing METACENTRIC CHROMOSOME. IMG showing SUBMETACENTRIC chromosome. IMG showing ACROCENTRIC chromosome. IMG showing TELOCENTRIC chromosome. Sub-Metacentric chromosome - example - 'X' chromosome Acrocentric chromosome - example - 'Y' chromosome, 13,14,15,21,22 chromosome. Telocentric chromosome - are not seen in humans.", 'role': 'assistant'}]