The following points highlight the five major causes of diseases in respiratory system. The causes are: 1. Infection 2. Irritants 3. Allergy 4. Vascular Accidents 5. Malignant Disease. Diseases in Respiratory System: Cause # 1. Infection: Infection may be caused by a virus as in the case of influenza, and virus pneumonia, or by bacteria, as in bronchitis, bronchopneumonia, lobar [...]
The following points highlight the two main causes of ploids. The causes are: 1. Aneuploidy 2. Euploidy. Ploids: Cause # 1. Aneuploidy: The individuals carrying chrornosome numbers other than somatic or diploid (2n), which are not true multiples of basic chromosome number or genome are called heteroploids or aneuploids. Thus aneuploidy results due to an addition of loss of less [...]
The following points highlight the top two theories explaining the causes of evolution. The theories are: 1. Lamarckism or Theory of Inheritance of Acquired Characters 2. Evolutionary by Natural Selection (Darwinism). Theory # 1. Lamarckism or Theory of Inheritance of Acquired Characters: Jean Baptiste Lamarck (1744 - 1829), a French biologist formulated the first theory of evolution (Fig. 27. 10). [...]