This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Endocrinology, Subject name: Physiology
Polar bodies are formed during 
Select and explain. 
A. Spermatogenesis, B. Organogenesis, C. Oogenesis, D. Morphogenesis
C: Oogenesis
Answer: C: Oogenesis 
Explanation: Polar bodies are one of two small cells formed by the first and second meiotic division of oocytes; the first is usually released just before ovulation, the second not until discharge of the oocyte from the ovary; in mammals, the second polar body may fail to form unless the oocyte has been penetrated by a sperm.Ref: Ganong&;s review of medical physiology; 24th edition; page no: 401