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.
This subtropical zone is a haven for gardeners who enjoy tropical flowers and fruit-bearing trees. Some of the warmest USDA zones -- 10a and 10b -- are in South Florida, which is home to Miami.