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why isnt the "evolutionary chart" continuing? did the human process stop? thats weird that it has stopped for thousands of years.

2007-01-31 13:39:57 · 10 answers · asked by isis 2 in Science & Mathematics Biology

so far, thanks for not shooting me down for asking a question like this :). i thought that would happen

2007-02-01 12:09:36 · update #1

10 answers

Here we go with the correct but still unpopular answer.

In order for evolution to proceed you need genetic variation that is acted upon by natural selection. Natural selection dictates that less fit individuals will reproduce less (or not at all) than more fit individuals. Without natural selection THERE IS NO EVOLUTION.

So, if you look at human beings, we have the technology to assure that all humans (or at least a random sampling) reach adult reproductive age, regardless of fitness (those 6 billion people out there must be proof of that). Hence there is no natural selection in human populations, hence there is no evolution in human populations.

Human technologies may evolve, but humans as a species have stopped undergoing biological evolution long ago. And no, it's not going on at a slow rate, and no, evolution does not happen continuously.

Unless something drastic happens you are already looking at the end product of human evolution.

2007-02-01 01:54:29 · answer #1 · answered by floundering penguins 5 · 0 0

Re: answer above

Saying that evolution has stopped is silly. It never stops. Ever. Unless you can truthfully make the statement that any individual is equally likely to reproduce as any other. And that isn't true by a long shot.

Just look at our country today. Look at the average family sizes for whites and blacks and hispanics and asians. That changes demographics. That's evolution. Undoubtedly, some of the selection criteria aren't as superficial as race. I'll leave it at that in order to stay clear of the subject of eugenics.

Evolution is probably taking place now at breakneck speeds because of what we have done to the planet. Not just our own evolution, but all species. Mass extinctions = major evolutionary upheaveal.

2007-02-01 10:22:18 · answer #2 · answered by Anonymous · 0 1

What do you mean by physically more advanced? Do you mean, like being able to swing and swim? Or do you mean having horns and wings?

Possibly, these mutations might arise, but even so, they have to be selected for. However, if they're not selected for, the features do not live on in the descendents.

The horns or wings will have to start taking shape first before they get really useful. For instance, a bump in the skull or some form of feathers. These features are then selected for and over millenia, they become the horn or wing.

In humans, such features would not be a selection, as they would be taken to be signs of satan. The organism sporting the mutations would then be killed off.

Although possible, it has progressed in different directions, for instance, in terms of size, speed, strength and intelligence.

2007-01-31 18:49:03 · answer #3 · answered by Anonymous · 0 0

Some good answers so far.
Humans are evolving. But the process is usually too slow to track in a human lifetime. Humans certainly have changed over the last 10,000 years, we have gotten larger for one thing.

There is a lot of information on www.talkorigins.org.
It is probably the best resource for information on evolution on the web.

2007-01-31 18:56:19 · answer #4 · answered by RjKardo 3 · 0 1

There's no set goal to evolution. The only thing we can say for certain is that the humans of the future will be descended from the people living today who have children.

So: Are the people today who are having children more physically advanced than those who don't?

2007-01-31 14:11:21 · answer #5 · answered by Anonymous · 2 0

Because evolutionary changes take place over thousands of generations. Nature favors those who are best adapted to their environment. They tend to live longer and reproduce more and therefore over time those with the most favorable traits tend to form the greater percentage of the population. For instance, an insect with a genetic anomoly that provides better camouflage will naturally produce more offspring that carry that gene. After hundreds of generations all insects of that species will eventually have that gene.

2007-01-31 14:27:51 · answer #6 · answered by kevpet2005 5 · 1 1

human beings are bodily not apes even nonetheless we seem fairly like apes. once you learn the anatomy, it could appear like the two have very almost the comparable anatomy, yet are actual plenty farther. as an occasion, their jaws, hair of their physique, their ft, and maximum heavily the genetic shape. to those that mentioned that we've around ninety 9.5% genetic shape corresponding to them, that may not information that we are like them or are their kin participants. we've very, very long DNA strands in our physique. the different 0.5% distinction is already plenty. this won't be called an information using fact a small distinction could mean many stuff. as an occasion, some ailment like sickle-cellular anemia and Down Syndrome, to call some, are brought about by way of an exceedingly small blunders in our chromosomes. If that small blunders meant plenty, then 0.5% might mean plenty extra.

2016-12-13 05:45:59 · answer #7 · answered by keetan 4 · 0 0

"thousands of years" is NOTHING ... a comma ... a blink of an eye in geological terms.

That's like looking at a tree and saying "if tree growth is real, why hasn't that tree gotten taller in the last 6 minutes?"

2007-01-31 17:51:25 · answer #8 · answered by secretsauce 7 · 0 0

evolution is a long and slow process, do you think we went from apes to our present day status in a few years?

2007-01-31 14:42:24 · answer #9 · answered by smarin1987 2 · 1 2

we are still evolving, spontaneous genetic defects occur everyday
and we are continuing to adapt to our environment

2007-01-31 14:01:25 · answer #10 · answered by Anonymous · 2 1

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