Before I answer, there's no such thing as an "evolutionist." In English we add the -ist postfix to a word to indicate belief in the system described -- there is no "belief" involved in accepting the facts of evolution, only rational and logical evaluation of evidence.
OK, now on to your question:
Because we didn't evolve from apes, apes and humans just share a common ancestor. Apes evolved and survived in their niche, we did the same in a different niche.
People who don't understand evolution often tend to think of it as a "directed" process -- working continuously towards some kind of final goal, often with that final goal they have in mind being humans. That's not how it is at all.
The process of evolution by natural selection is more like a huge tree, with the simple lifeforms we all evolved from at the base, and the branches growing wider and thicker as new species evolve. Don't get things backwards: we don't evolve new organs, capabilities, limbs, etc. in order to survive a changing environment (that assumes a cause for evolutionary changes) -- rather, those evolutionary changes happen at random...and if they give the animal they happen to a better chance of surviving and reproducing in their environment, the changes will survive and thrive. Lots of evolutionary changes happen that *don't* give any advantage to survival or reproduction, or that hinder those two things, and those mutations disappear because the ones who had them don't survive or thrive.
Changes to our common ape ancestor that moved us towards being human *did* give us advantages that we have used to survive and reproduce. Other changes happened, and that branch of the tree ended up being the apes -- their own changes let them survive well in a different environment.
The question is similar to asking, "if a cockatoo [dog breed that's a mix of a cocker spaniel and a poodle] exists, then why are there still cocker spaniels and poodles?" Get it? :)
2006-12-01 09:42:11
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answer #1
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answered by Anonymous
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well accroding to cuurent theory some did.
but not all...
like in the start of the industrial revolution in england. sout from the factories turned th egreen forests of england ebony black. there is/was a species of month that ranges in colors. after the forest turned black all white moths died. and black moths survived.
not all monkeys changed, because they all didn't have too.
but we still have tail bones, we still have organs we have no use for. our genetics are still almost exactly the same.
in a crazy world, way way back in the day the theory goes apes changed into human like creatures out of survival. they don't know exacly how, or when. and they still haven't found the missing link.
too understand evolution look at dogs ( or cats)
all dogs at one point in history where wolfs, all dogs. over times these wolfs have become dogs, much like apes have become humans.
Evolution is a very interesting belief system. but the beauty of science is nothing is concrete. if you could prove it doesn't exist, people aren't going to call you a nut and possible lynch you, but you would become a billionare.
2006-12-01 09:42:00
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answer #2
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answered by sapace monkey 3
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there were in fact several different breeds of human early on that were not just ancestors, including neanderthals and several other species including a significantly shorter breed of humanity (dubbed hobbits and completely different from the genetic disorder that causes dwarfism) but they are all beleived to be extinct. In fct the evidence actually suggest they had little contact with homo sapien and were wiped out by disease or other problems, neaderthals were noted for being small in number and did not live long even in their prime due to rheumatism from evolving to stand upright.
As for other species, it's a question of opportunity, environment and other factors such as gene pool. A species needs the time and combination of security to breed plus danger for making evolution necessary. Also they must have an environment that can support them whilst making it clear what direction they must evolve to be more sucessful, and they need a varied enough gene pool to breed these traits or mix form similar species. To answer your questions directly. apes are a seperate species, at no point did humans belong to any of the species of ape alive today. we had a common ancestor and while some evovled to humans others evolved to other species of apes, all well suited to their environment.
2006-12-01 09:38:16
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answer #3
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answered by jleslie4585 5
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Look evolution pushes things toward what is most able to survive in any open. That is why there are still bacteria around too.
It is a total misrepresentation to say that it means that if a new form comes up, the older ones disappear. It also doesn't mean that things will involve to more intelligence. It only means that things that can survive will stay around.
2006-12-01 09:35:41
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answer #4
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answered by Anonymous
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Well, evolution take millions of years, we've only been studying apes for a few hundred. That's like looking at an apple for four seconds and asking why it hasn't gone moldy yet.
2006-12-01 09:33:18
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answer #5
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answered by Tellus A 2
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it has to do with proteins and that 2% of genetic difference. millions of years ago a group of the common ancestor of both apes and humans found that to servive they had to eat more than just nuts and berries. they needed meat. this extra protiens they get from this (over time mind you) gave them a larger brain
2006-12-01 09:37:48
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answer #6
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answered by god_of_the_accursed 6
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Because we didn't evolve from apes. Apes and humans each evolved from a common ancestor.
2006-12-01 09:32:41
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answer #7
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answered by Blunt Honesty 7
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We descended from a common ancestor. Our side of the tree became Homo sapiens, the other side became the great apes.
2006-12-01 09:32:53
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answer #8
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answered by Anonymous
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Don't ever call Evolution a ladder, but a tree, you'll find out.
2006-12-01 09:37:26
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answer #9
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answered by FAUUFDDaa 5
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Are you trying to say "if we came from monkeys, then why do we still have monkeys"?
If all dogs were bread from wolves and wild dogs, then why do we still have wolves and wild dogs? Just because we still have monkeys doesn't mean that they have not evolved.
2006-12-01 09:35:16
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answer #10
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answered by smellyfoot ™ 7
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