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: Anatomy
[{'content': 'First polar body is extruded at: \nSelect and explain. \nA. At the time of menstruation, B. At the time of ovulation, C. At the time of feilization, D. At the time of menopause', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Polar bodiesThe first meiotic division of a primary oocyte produces 2 unequal daughters with haploid number of chromosomes (23). The large cell is called the secondary oocyte and the smaller cell is known as first polar body.The second meiotic is completed if feilization occurs. This results in 2 unequal daughter cells. The smaller daughter cell is called as second polar body.', 'role': 'assistant'}]