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). [...]
The below mentioned article provides an overview on the Evolution in Plants and Animals. The term evolution means unrolling or unfolding (Latin word 'evolve' = unfolding). It is defined as the process of gradual and orderly change from one condition to another. Such gradual and orderly changes are taking place in all the living, as well as non-living things. The [...]
The following points highlight the top five theories of the evolution of organic forms. The theories are: 1. Theory of Eternity of Present Conditions 2. Theory of Special Creation or Creationism 3. Cosmozoic Theory 4. Theory of Catastrophism and Spontaneous Creation 5. Theory of Organic Evolution. Theories of the Evolution of Organic Forms: Theory of Eternity of Present Conditions Theory [...]