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.
Australia has two climate zones â tropical and temperate. Tropical. The tropical zone is in the north above the Tropic of Capricorn, encompasses about 40% of the country, and experiences two seasons â summer (wet) and winter (dry). The summer rain brings the lush rainforests of the tropical zone to life.