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.
Ascent (negative values) is concentrated close to the solar equator; descent (positive values) is more diffuse. A tropical climate is a climate typically found within the tropics, while a few locations outside the Tropics are considered to have a tropical climate. In the KÃ¶ppen climate classification it is a non-arid climate in which all twelve months have mean temperatures of at least 18 Â°C (64 Â°F).