I was lucky to watch asome of the documentary about human evolution. they said the evolution theory that ruled the previous century was not true that way. It was not like an ape that gave a modification to a higher creature which in turn gave the genes modified to another creature. all these "human species" coexisted....with us.
These hominids are a part of the "family bush" of walking apes, and their discovery has indeed taught us that human evolutionary development has been no neat passing of the natural-selection baton from one hominid to another, each succeeding species a little more upright and a little less hairy than the previous one. Instead, as Ultimate Survivor shows, multiple forms of humans lived at the same time, most coming in contact and even competing for resources (and perhaps eating each other, too). "Evolution plays a game with chance at all times, and it's often just chance on which species survive," says Berger. Various adaptabilities, physical traits, and developmental achievements gave some human species evolutionary advantages over others. Our particular combination of "luck and talent" brought us Homo sapiens to the dominant position we have today.
Last Edit: Mar 31, 2007 12:18:32 GMT -4 by lionking