Since hyperandrogenism is a major feature of PCOS, several androgens are used to induce PCOS‐like conditions (symptoms that resemble human PCOS, such as anovulation, cyst-like follicles, elevated LH levels, increased adiposity, and insulin insensitivity) in rodents, including testosterone, 5α‐dihydrotestosterone (DHT), and dehydroepiandrosterone (DHEA) [90, 102, 115]. The gene discussed is INS; the disease is polycystic ovary syndrome.