Hyper IgE syndrome is rare with less than 850 cases reported worldwide. It affects both boys and girls equally. It is due to genetic mutation in the gene on chromosome 4. In some cases, the genetic mutation has not been identified.
Report Abuse. The tropical zone is characterised by strongly monsoonal weather patterns, distinct wet and dry periods which are highly reliable, large quantities of rain and high intensity rainfall, high temperatures, and high rates of energy transformation.
The major climate zones are Polar, Temperate, and Tropical. There  is just one Tropical Zone, but two each of Polar and Temperate  zones-north and south of the equator.limate is an important abiotic factor because it affects which organisms can live there. For instance the climate in Antarctica is extremely harsh and cold. The climate in â¦ the tropics is hot and wet. Palm trees live in the tropics but don't live in Antarctica.