This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Surgery
[{'content': "Pendred's syndrome is due to a defect in ? \nSelect and explain. \nA. Chromosome 7p, B. Chromosome 7q, C. Chromosome 8p, D. Chromosome 8q", 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., Chromosome 7q Pendred syndrome consists of - congenital sensorineural deafness - goitre It appears to be due to a defect in a sulfate transpo protein common to the thyroid gland and the choclea.", 'role': 'assistant'}]