When this happens, the thyroid gland is no longer under pituitary control. The amount of hormone it produces is dependent on levels of TSI. TSI are the direct cause of hyperthyroidism in Gravesâ disease and various immune system chemicals known as cytokines also contribute to the symptoms that occur in this disorder.
Iguanas are reptiles and nearly all reptiles lay eggs. There are some reptiles that do not lay eggs, but they are very rare. Female iguanas usually lay a clutch of eggs every year once they're mature. If there is no male iguana, she will still lay eggs, but they won't be fertile.
Iguana iguana Farm Bred Unsexed Juveniles Approximately 24 To 27 Inches Females Can Lay Up To 12-20 Eggs With Good Care And Handling These Iguanas Can Live Up To 15-20 Years Originating From South Mexico To South America And The Caribbean These Lizards Are Used To Living In The Trees As Well As Burrows Soâ¦.