The following points highlight the four main theories in mechanism of evolution. The theories are: 1. Lamarck's Theory 2. Darwin's Theory of Evolution 3. De Vries' Theory 4. Modern Theory of Evolution. 1. Lamarck's Theory: Jean Baptiste Lamarck (1744-1829), a French naturalist, made several valuable contributions to biological science, including the coining of the term 'biology' and using the same [...]
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 [...]