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: Pediatrics
[{'content': 'Gonads to testes differentiation – \nSelect and explain. \nA. SRY gene, B. WN T–4 gene, C. DAX1 gene, D. None', 'role': 'user'}, {'content': 'Answer: A \nExplanation: 46 XX chromosome with genetic factor such as DAX1 and signaling molecule WNT-4 are necessary for development of ovary.\nY chromosome contains SRY gene which differentiates gonads to testes.', 'role': 'assistant'}]