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.
Confidence votes 20. Female Iguanas will lay eggs when they become sexually mature, which is around 1.5 to 2 years old. They do not need to be fertilized to lay so therefore do not need a male Iguana. They need to be healthy before they lay or else there can be very serious problems.
While some mosquitoes lay their eggs on the surface of the water, the most abundant species deposit their eggs on moist soil. These eggs may lie dormant for several months and even years and will not hatch until they are covered by rain water or tides. Four to five days after the eggs hatch, the larvae are full grown.hile some mosquitoes lay their eggs on the surface of the water, the most abundant species deposit their eggs on moist soil. These eggs may lie dormant for several months and even years and will not hatch until they are covered by rain water or tides. Four to five days after the eggs hatch, the larvae are full grown.