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.
Worldwide zones of Tropical savanna climate (Aw/As). Tropical savanna climate or tropical wet and dry climate is a type of climate that corresponds to the KÃ¶ppen climate classification categories Aw and As. Tropical savanna climates have monthly mean temperatures above 18 Â°C in every month of the year and typically a pronounced dry season, with the driest month having precipitation less than 60 mm and also less than 100 â [total annual precipitation {mm}/25] of precipitation.â1 This latter fact is in direct contrast to a tropical ...