I can't tell you why we came from apes because I don't believe we did. That's Darwin's theory.. not fact, just a theory.
2007-03-09 14:41:20
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answer #1
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answered by Speedy 6
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I assume you are asking "why do scientists believe this?", not "why it happened?" ... (there is no way to say 'why' it happened).
Second, we didn't "come from apes" if you mean the kinds of apes you find today (chimps, gorillas, orang utans, etc.) Humans *are* classified as apes (just as we are classified as primates and mammals). The theory is that humans and the other apes all evolved from the same ancestor (which is long extinct).
Also, it isn't just "according to Darwin", but according to literally *thousands* of scientists (some of them pretty smart), for over 150 years.
Now, to answer your question. The reason *why* scientists believe humans and apes share are a common ancestor are enormous.
1. Fossils: A long sequence of earlier forms of humans and the other apes all tracing back to the same location (Africa), time, and structures.
2. Genetic evidence - These are the genes that we have in common with other primates.
3. Molecular evidence - These are commonalities in DNA ... separate from genetic commonalities.
4. Proteins - These are the proteins in common with other primates. Things like blood proteins (the things that give us our A, B, O blood typing; the exact structure of the insulin molecule; and the pigments in our eyes that give us color vision (no other mammals have them).
5. Vestigial structures - These are structures that are useless, almost useless, or just badly 'designed', that can only be explained in terms of descent from animals in which they were more useful. Things like wisdom teeth, appendix, your big toe, the plantaris muscle (a long thin muscle in your calf that serves no useful purpose in humans is used for grasping with the feet in the other apes), the tiny muscles that give you goosebumps (used in primates with fur when cold or threatened).
6. Homology - These are structures and proteins that have commonalities between species, but have a different function.
7. Embryology - This includes things like tails and gill folds in human embryos and those of all other mammals.
Now all of these just concern human evolution. The lines of evidence for evolution in general are much bigger (e.g. I didn't include things like virology, or bacteriology, or evidences from medicine).
2007-03-09 23:03:15
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answer #2
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answered by secretsauce 7
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Darwin short and sweet.
We adapt to exist in our surroundings.
If we do not change we die.
So animal kingdom for example our favourite dinosaurs.
We know that birds came from anciet beings.
We know that elephants are related to the now deceased Wolly Mammoth.
Now as far as man from apes is concerned.
We are both mammals from the order Primate.
We have the same opposable digits (thumbs).
Much testing has been done that links us genetically and would take a lifetime of research to explain.
So over time the world has changed and we have evolved accordingly.
"Cave men" were hairy because they needed to be.
They walked hunched over to protect vital organs.
As time progressed and man created tools, weapons etc, his need to protect himself by hunching over ceased and as time went by man became homo erectus.
The theory of evolution need not threaten man's existance, it goes to show that if we are to limited in our thinking we miss the big picutre.
Darwin speaks of survival of the fittest. This can also hold true for the intellectually fit. The more you know the better changes you have at having a longer, healthier and informed life.
Read up on him for histories sake and do not let your belief system get in the way. The Theory of Evolution is an interesting read whether you support it or not.
Change is inevitable, mankind and nature are not still.
2007-03-09 22:52:20
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answer #3
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answered by makeda m 4
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Our ape anscestors spent a lot of time in the shallow pools that collect in the jungle clearings. We are mostly hairless, our women have boyant perky breast unlike saggy ape breasts, and our children instinctively hold their breathe and try to swim. Modern apes have been seen to walk upright when they are in those pools. This could have aided our development to bipedalness. Eventually the climate changed and the jungles receeded leaving us on a savanah plain. Our upright walking helped us to survive here by letting us see danger, or food, approaching. We had to adapt our diet to include more meat which brought new kinds of proteins into our bodies. Our social adaptation allowed us to notice, by clues like footprints or feces, when a predator we should avoid was in the area. This same attention to detail and being able to communicate the detail to others played a big role when we began to hunt to fresh meat.
2007-03-09 22:56:30
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answer #4
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answered by St. Toad 5
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According to Darwin, we did not descend from present day Apes.
Going back in time, humans and apes had a common ancestor.
Some descendents became apes, some became humans.
2007-03-09 22:41:49
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answer #5
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answered by Anonymous
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We did not come from apes, we and modern apes come from a common ape-like ancestor. The idea that we descended from monkeys and apes is a common misconception.
The reason we split is probably due to the different ways of life of different groups of our ancestor and they eventually split off to form the different primates we know now - Gorillas, Orangutans, Chimps, Humans, etc.
The theory of evolution is not "just a theory". Scientists use the term theory differently than the common person, a Theory is a well tested and verified explanation. No amount of proof can make a theory a law.
2007-03-09 22:42:31
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answer #6
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answered by Anonymous
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A large series of small changes based on the inherent survival advantage they conferred in our environment. In other words, way back when we were a group of ape-like creatures(descended from a common ancestor with the rest of our simian brethren) who were no more superior or complex than most other animals. However, one day one of our ape ancestors was born with a mutation that gave him an ever so slightly more complex brain than the others. Since he was a little smarter than the others he survived longer in the wild (since everything was 'the wild' at the time) and thus got to have more kids. The smarter ones of the 'tribe' had a tendency to survive longer and have more kids in general, thus as the generations progressed (over millions of years) we got smarter and smarter as our brains got more and more complex. Only by very little bits at a time, mind you, but it all added up. Also, because of the environment we lived in at the time, it seems the less hairy ones also survived more often, as well as the ones who stood fully upright. These types of gradual changes over long periods of time are not just responsible from turning grunting proto-apes into Internet pundits, but for the much more grandiose task of turning a few ultra-primitive one-celled organisms into every living thing on Earth, from trees to germs to your mother and her cat.
Also, as the gentleman below me pointed out we are in fact still classified as apes.
2007-03-09 22:42:11
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answer #7
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answered by The Lobe 5
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We did not come from apes we came from a common ancestor as apes. The idea that Darwin said we evolved from apes was told by people who opposed evolution.
2007-03-09 22:41:52
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answer #8
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answered by dv4unme 3
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Darwin never said we came from Apes.. More like ancient primates.
We came from ancient homonids like Homo Erectus, Homo Ergastor, Homo Sapien.. and we still are homonids, Homo Sapien Sapien to be exact. The DNA found in their bones has been linked to us.
The Neanderthol, known better as the Caveman, was recently found to have never mixed blood with the Homo Sapiens who existed around the same time. This was found through DNA evidence from their bones, we do not come from the Neanderthol, their species went extinct.
You should really educate yourself on the subject of evolution, you might learn something.
http://www.becominghuman.org/ start here, very informitive.
2007-03-09 22:51:48
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answer #9
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answered by Fluffington Cuddlebutts 6
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yes, it is because of evolution. Evolution is basically this. You have 200 cats 100 are black 100 are white. In the cold climate with snow the black cats are more likely to get eaten because they are not as well hidden from preditors, so the white cats reproduce and live on. This is the simplist form and easiest explination of evolution. I know it is not complete but it is the basic idea. Research and study biology and you will understand.
2007-03-09 22:45:53
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answer #10
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answered by Anonymous
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Some ape got tired of scratching all the time, eating bananas and hanging around in trees.
2007-03-09 22:42:42
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answer #11
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answered by cattbarf 7
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