The following is Darwin’s theory of evolution through natural selection (in a nutshell). Charles Darwin recognized natural selection as the means of adaptive evolution. Darwin's theory works like this: If a population has variation, is transmissible, and several variants endure to replicate at greater proportions than others, then we know that this populace will develop, advance and the configuration or structure of the inhabitants will modify from generation to generation; the qualities and character traits that survived will become more common, whereas the least conductive traits will not fade. So from Darwin’s theory we can comprehend how each and every species living on earth today is in itself the creation of an evolutionary lineage. In other words, we all ascended from a previous species, which arose from a prior species, and the cycle repeats itself over and over again. Evolutionary roots can be found back in time pending the two lineages coming together (this occurred between the ancestral that are more commonly connected). One instance of this is the “so called” shared ancestor of monkeys and Humans. Monkeys lived several million years ago, while our common ancestor of humans and the puffer fish was an ancient fish that lived in the ocean more than five hundred billion years ago. …show more content…
Nor can humans be descended from the species of fish that live today but, rather, from the species of fish that gave rise to the early tetrapods. Thus if two species lived in a timeframe that was relatively close, the likelihood of then having behavioral patterns and physical aspects would be more common the two species with more distance between them. Human beings are therefore seem more comparable to primates than they are to fish. Yet, all creatures share commonalties because they all shared mutual descendants at some point