Part 1 of Essay
CHARLES DARWIN AND THE THEORY OF EVOLUTION It is commonly thought today that the theory of evolution originated from Darwin in the nineteenth century. However, the idea that species mutated over time has been around for a long time in one form or another. Therefore, by Darwin's time the idea that species change from one ....

Part 2 of Essay
.... at the production of offspring. However, these theories of evolution were based on prior explanations that offered no demonstrated mechanism. Darwin's theory of evolution differs in that it is based on three easily verified observations. First, individuals within a species vary from one another in morphology, physiology, and behavior. Second, variation is in some part inheritable so that variant forms have offspring that resemble them. Third, different variants leave different number of offspring. Dar ....