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 climate zone of our planet, occupy wide territories between the subequatorial climate zone and the 30-th parallel. In reality the tropic circl The tropical climate zone of our planet, occupy wide territories between the subequatorial climate zone and the 30-th parallel.