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: Pathology
[{'content': 'Genes for sex determination is: \nSelect and explain. \nA. Shh, B. SRY, C. AZF, D. HOX', 'role': 'user'}, {'content': 'Answer: B \nExplanation: The SRY gene provides instructions for making a protein called the sex-determining region Y protein.\xa0\nThis protein is involved in male sexual development, which is usually determined by the chromosomes an individual has.', 'role': 'assistant'}]