what is an evolution?

Question

the evolulutional theory of dalton

Answer 1

Evolution is change over time.

Dalton was a chemist. I don't know that he had an evolutionary theory.

Darwin was a biologist. He proposed that the origin of species was the result of evolution--natural selection acting on populations over time to change them.

Answer 2

Darwin. Dalton was a chemist.

First, you should read this:
http://en.wikipedia.org/wiki/Theory#science

A Theory in Science is not the same as a theory in pop culture. In Science, a Theory is something that was first proposed (a hypothesis), was then tested, and has been proven multiple times by multiple different people in a repeatable fashion.

So the Theory of Evolution is a tested, and proven, set of rules that can be used to predict how things will act in the future.

That being said, this is what evolution says, in the short version:
1 - Organisms have certain inheritable characteristics
2 - These inheritable characteristics make the organism more or less able to survive long enough to attract mates and produce children
3 - Organisms with bad inherited traits will have fewer children than organisms with good inherited traits.
4 - Eventually, the ratio of some traits will change within a population of organisms. Therefore, the population will be different, on a genetic level, than it was before.

That's all there is to it: Change in the ratio of particular traits over time.

Long-term, and I mean REALLY long term, like tens of thousands of years, you will see different species come and go. Some organisms will change so much that what they evolved from (their "predecessors" in the scientific terminology) won't recognize them and won't mate with them anymore. And so you'll get a new species.

EDIT: To Ben and others who may post this:
Charles Darwin did not refute evolution on his deathbed.
http://www.talkorigins.org/indexcc/CG/CG001.html
http://www.answersingenesis.org/creation/v18/i1/darwin_recant.asp

Answer 3

When a stess is brought to bear upon a system in equlibrium the equilibrium shifts so as to remove the strain. That is Le Chatelier's principle in chemistry. Selection of the fittest is the same idea. Aspects of genetic diversity that shoot back will be selectively favored for reproduction in a partially lethal environment.

Evolution can then be thwarted in two ways:

1) Remove genetic diversity. New World indios went through a severe genetic contraction during Arctic land bridge Ice Age migration. When Spanish conquistadors arrived, at least 20 million inbred genetic throwbacks were selected against.

2) Remove selection stress. Welfare guarantees poverty. Medicare guarantees illness. American zero-goal education guarantees stupidity.

Evolution is a hoot if you are one of the survivors.

Answer 4

agreed with first answer,,... not dalton, but Darwin,,, cause his theory actually had a solid living demonstration of evolution, and that he broke it down in to simplier more understandable ideas...

it is a change in an organism over period of time,,, base on natural selection.(the affects of the environment to the evolutionary steps..)

Answer 5

Here ya go....

http://library.thinkquest.org/C0110925/html/history/atomicevolution/atomicevolution5.html

It has to do with the evolution (change) in the ideas of the atom. In this case, "evolution" is harmless, and just means change...

Ron.

Answer 6

it was darwin not dalton

the theory is that a speicices will adapt to a changing environment and gradualy over thousands of year become a completley different speicies than it was several thousand years ago

Answer 7

the new beginning of Dalton!

Answer 8

Hi. A chemical is used to kill germs. It kills all but 1 in 1,000,000,000. These last germs are resistant to the chemical. They have 'evolved' a resistance.

Answer 9

I don't know anything about it except that Darwin himself said he did not believe the theory before he died, and that it is, in fact, a whole bunch of lies! Don't know anything except for that!

Answer 10

evolution simply means a change over a period of time.