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.
Turtle eggs hatch between 8 and 10 weeks after they are laid. While breeding and egg-laying habits vary slightly between different species of turtles, most species have roughly the same incubation... Turtle eggs hatch between 8 and 10 weeks after they are laid. While breeding and egg-laying habits vary slightly between different species of turtles, most species have roughly the same incubation period. According to About.com, sea turtles mate in the ocean. Afterwards, the female turtle swims to the shore to lay her eggs. She buries the eggs in the sand and leaves them there to incubate and hatch. Common box turtles may mate on land or in the water and the female box turtle usually lays her eggs in a nest on top of the sand instead of burying them. Learn more about Turtles