Part one of term paper
How do new and different species develop? How do existing species change over time? The answer to these questions is found through the process of . According to Monroe W. Strickberger, a professor at the University of Missouri in St. Louis, is defined as, "Genetic changes in populations of organisms through time that lead to differences a ...

Part two of term paper
... and disuse and, 2) the inheritance of acquired characteristics. The principle of use and disuse states that if an animal frequently uses an organ then that organ will grow in strength, and if an animal does not use an organ it deteriorates until it eventually disappears (Strickberger 22). The inheritance of acquired characteristics states that the changes that occur in animals through the principle of use and disuse are passed on to the animal's offspring (Strickberger 23). Lamarck's theory on ...