Humans are still evolving.
http://www.forbes.com/lifestyle/health/feeds/hscout/2005/09/08/hscout527858.html
Our brians are getting bigger & human children are growing taller in height per every 6th generation.
http://www.hon.ch/News/HSN/527858.html
2006-08-21 16:02:34
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answer #1
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answered by prophetessqueen 3
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""If evovlution were a fact why are the things we evovled from still around?""
Good question. And one easily answered.
They are not still around. Every living thing on this planet has been evolving just as long as every other thing. And, each generation of creatures, dies and is replaced by its offspring. The subtle changes in each generation ultimately lead to wholly new species. It's not hard to understand how this might happen.
All dogs are derived from wolves, and it is easy to selectively breed a new shape of dog. That's just evolution sped along by humans.
""Why do some scientist say Our dna is geting more muttled not more addvanced, and what will we evovle into next?""
I'm not familiar with the "DNA is getting muttled" theories. As far as what we'll evolve into next, I'd say we are certainly getting taller on average. But the next big changes will probably come from human manipulation of our genome rather than natural selection.
2006-08-21 16:03:53
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answer #2
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answered by ce 2
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As others have said, the primates we evolved from are NOT around. We're genetically cousins with chimpanzees & apes, all descended from a different primate species that no longer exists.
However, there ARE species on this planet that are much older than the primates we descended from. The only reason that our ancestor primates aren't around is that there is no longer an environmental niche where they can compete with their descendants.
There is a vast amount of consistent evidence supporting the Theory of Evolution. Almost as much evidence as there is to support the Theory of Gravitation. Scientists start with an "hypothesis" and start doing experiments that could prove the hypothesis to be wrong. That's right, prove it WRONG. (An hypothesis that is not falsifiable is a useless hypothesis, which is why the "God did it" hypothesis is useless). The scientist (if she is a good one) knows that her hypothesis is more likely wrong than right, and wants to prove it to be wrong as soon as possible, so she wastes as little time on the bad hypothesis as possible. If she does several experiments that don't prove the hypothesis wrong, she publishes the result so that other scientists can reproduce her work, and try other experiments that she didn't think of. If several other scientists independently find no evidence against the hypothesis, then the hypothesis is ready to be called a theory. But scientists don't just start using that word for any old hypothesis that hasn't been disproved. An hypothesis has to have predictive power. It has to be useful to explain and predict results. If an hypothesis has such great explanatory power that it predicts things that hadn't been thought of before, AND it has never been disproved despite lots of trying, THEN scientists call it a Theory. Note that the word theory is much more like the world Theorem from Mathematics -- i.e. something that has been proved.
The Theory of Evolution is the most successful theory of Biology. Darwin's original theory of natural selection was made before Mendel's experiments that revealed the basic laws of genetics, and was long before Watson and Crick discovered the molecular structure of DNA. The great thing about Darwin's theory is that it nearly predicted genetics and DNA. These discoveries fit perfectly within Darwin's theory, and strengthened the theory.
Since the discovery of DNA there have been thousands of additional insights that have strengthened the Theory of Evolution. Its predictive power is very strong.
Note that I am not saying that there isn't controversy within the Theory of Evolution. However, the controversy is out at the edges of the theory, not at its foundation. For example, the basic Theory of Evolution predicts that the Tree of Life is a Tree. That is because every new species is branch off the line of a previous species. However, by studying the genome of many species, there is some evidence that perhaps the Tree of Life is not a tree, but more of a web. Perhaps some new species evolved because a virus transferred DNA from one species to another, and caused a new species to be created as a result. If this is true, it doesn't invalidate the Theory of Evolution, but it does require the Theory to become a little more complex.
The last thing I have to say here is that you must have an appreciation for the time scales involved in evolution. Evolution happens very slowly. There has been no significant evolution in humans for more than 100000 years, or for about 400000 generations. Someone answered that we're getting taller and smarter every six generations, but that's probably happening without any significant changes in our genome. Rather, those changes could be happening just from better nutrition, better standard of living, better medicine, and better education. However, 100000 years is still a short duration of time when compared to this history of life on this planet. The first living thing (self-duplicating molecule) was created more than 3 billion years ago, and there was probably millions of years elapsed before a random mutation resulted in a "better" self-reproducing molecule. These molecules are the ancestors of our DNA. The key point here though is the magnitude of BILLIONS of years. The human mind really can't comprehend how long that duration of time is. I think if we could, then there would be much less doubt as to whether Evolution was true.
2006-08-21 17:25:56
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answer #3
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answered by Jim L 5
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It is a known fact, evolution. It is a "thoery" only in the sense that gravity is still considered a theory. This is the sense that all facts are considered merely theories that have not yet been proven false, which need not be applied in this situation.
Species have evolved from other species. It is a fact. If you want to see the process in high-speed, take a peek at bacteria when a disinfectant is applied to it. Bacteria evolve at rapid speeds. We evolve slower for many obvious reasons.
The "things" that we evolved from are not still around. MAny think that we evolved from monkeys. Not true. Monkeys and us both evolved from a common ancestor, that's it.
What will we be next? If religion continues at this rate, it will set off a nucelar reaction that wipes out civilization as we know it, and we will never know what humans will later become.
2006-08-21 16:00:26
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answer #4
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answered by JokerBlitz 1
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Evolution is not a line in one direction. Evolution is as random as anything you can imagine. DNA mutates or as you say "muttled" on a regular basis that is how change occurs. Let's say for instance, if my DNA mutated and I was born with very tiny thumbs. I would not bery adapted to my environment and may not pass on those genes. The successful genes are the ones that get passed on.
So to answer your question the things we evolved from are still successful in the environment they live. If taken out of that environment they might die or else evolve as we and everthing else alive today has done.
Evolution is SLOW, very SLOW so where evolution takes us? We will never know, but we can be assured it will only depend on the environment in which we live. The successful genes live, the un-successful die.
2006-08-21 16:03:08
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answer #5
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answered by Mike H 1
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Our ancestors are not still with us. It is believed that there was a common ancestor that we and the other currently existing primates evolved from. Thus, the other existing Great Apes (Chimpanzees, Gorillas and Orangutans) are our distant cousins, not our ancestors. I'm not saying that evolution is a fact, just repeating what scientist have said about the fossil record.
I haven't heard anything about the DNA issue, and it's probably anyone's guess as to what we may evolve into next.
2006-08-21 15:58:03
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answer #6
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answered by eddygordo19 6
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Jeesh...
You "evolved" from your parents, didn't you? I'm assuming they didn't disappear as soon as you arrived...classic misunderstanding of Evolutionary Theory.
Which scientists say our DNA is getting more muttled? References please...furthermore, we exist in such a small slice of time in the timeline of this planet that no one can say whether our DNA is getting more "muttled" or more "addvanced" (sp).
What will we evolve into next? That's the point of evolution, it's completely random. Random mutations that are favorable then get selected (preferentially) through natural selection. Perhaps if the planet continues to warm and ultraviolet radiation is rather strong, then those who lack proper pigmentation will be "weeded out". Those who have mutations to survive harsh ultraviolet conditions will survive. I just hope proper spelling is not a factor in natural selection...lol...
2006-08-21 15:59:49
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answer #7
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answered by The ~Muffin~ Man 6
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Because certain species of apes happpened to have more conveniant locations in Africa and decided to live on the ground floor of forests resulting in the loss of some the ability to climb and was forced to find new ways of living and use more brainpower. After years of this their intelligence began to drastically grow extraordinarily slow which is what we refer to as evolution. No one can currently interpret what mankind will evolve into or if it even wil at all.
2006-08-21 16:01:02
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answer #8
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answered by some guy 3
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1) They arent. Homo sapiens evolved from species that are not still around, like homo erectus. Chimps are our closest living relatives, but we did not evolve from them, nor them from us.
2) Its getting more "messed up" because of the effects of modern society. For example, in nature, if an animal has terrible eye-sight, it cant hunt, cant find food.. It dies quickly and does not pass on its genes. When a human has terrible vision, we get them glasses or contacts, and they Live normally, even reproducing and passing on their "bad" genes to offspring, who pass them to their offspring, and so on. So our ability to deal with bad genes is causing us to evolve in bad ways. What are the odds that a wild animal will be born with genes for bad eyesight? Very slim. What about a human? Not so slim at all!
3) With the advent of genetic engineering, there is no telling what humans will be like in 100 years. A better question is, Will religious fanatics have nuked ourselves out of existence by then?
2006-08-21 15:58:02
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answer #9
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answered by Phil S 5
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Evolution takes place over eons so changes are not so apparent in the short run. As far as our D.N.A. "geting more muttled" I can't say. I have no idea what that's supposed to means.
2006-08-22 00:30:54
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answer #10
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answered by Anonymous
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(1) Evolutionary development does not claim humans (or any other current species) evolved from another current species ... it simply asserts there is a strong likelihood of common ancestry.
(2) Environment is key in population adaptation and development ... and since populations tend to separate and spread out over time, they diverge.
2006-08-21 15:57:41
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answer #11
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answered by Arkangyle 4
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