input: The following are multiple choice questions (with answers) about medical knowledge.   **Question:** A 29-year-old man comes in for evaluation of infertility. He has been trying to conceive for over 2 years with his wife and previous evaluation of his wife's fertility revealed no abnormalities. Physical exam reveals a tall man with long extremities, sparse body hair, gynecomastia, and small testes. Laboratory studies reveal increased serum follicle-stimulating hormone concentration and an increased estradiol:testosterone ratio. Genetic studies reveal a cytogenetic abnormality. If this abnormality was inherited from the patient's father, at which stage of spermatogenesis did this error most likely occur?   (A) Primary spermatocyte   (B) Secondary spermatocyte   (C) Spermatid   (D) Spermatozoon
output: ['(A) Primary spermatocyte <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Primary spermatocyte  (B) Secondary spermatocyte  (C) Spermatid  (D) Spermatozoon <> possible answers', "  A 29-year-old man comes in for evaluation of infertility. He has been trying to conceive for over 2 years with his wife and previous evaluation of his wife's fertility revealed no abnormalities. Physical exam reveals a tall man with long extremities, sparse body hair, gynecomastia, and small testes. Laboratory studies reveal increased serum follicle-stimulating hormone concentration and an increased estradiol:testosterone ratio. Genetic studies reveal a cytogenetic abnormality. If this abnormality was inherited from the patient's father, at which stage of spermatogenesis did this error most likely occur? <> context"]