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 tropical regions of Australia, in the north of the country, including the equatorial and sub-tropical zones have high temperatures and high humidity and distinct wet and dry seasons. In the Australian tropics the wet season, called the monsoon season, lasts about six months, between November and March.