can you explain dawins theory on evolution?

Question

and wher to gat any information

Answer 1

Evolution by natural selection occurs when certain traits increase the reproductive fitness of individuals that possess those traits; That is, some individuals have more babies than others. The traits that cause an individual to have more offspring will become more widespread as time goes on, and traits that cause an individual to have less offspring will be eliminated. I highly suggest reading the wikipedia article on natural selection.

Answer 2

There isn't room here, but you could start with reading "The Origin of Species." For modern interpretations and application, the works of Stephen Jay Gould come highly recommended.

In a nutshell: Individuals within a species vary. Some of these differences are heritable. Some differences influence the 'fitness' of the individual. For our purposes, 'fitness' is roughly defined as the ability to survive to adulthood and produce offspring. To the extent that a given characteristic affects fitness and is heritable, it will tend to become more common because those with that trait produce more offspring.

Over time, different populations are subjected to slightly different selective pressures, which may cause differential selection for certain traits. This occurs most commonly by geographic isolation. Eventually the accumulated differences make the populations unable (or unwilling) to interbreed, effectively creating new species.

It should be noted that there are two classes of selection. Selection among existing genetic variation is not usually sufficient for true speciation, but may produce local varieties or subspecies; it is also the primary mode for selective breeding by humans. True speciation, and evolution, can only occur if there are new genes (mutations) which occur over time and usually have no effect of fitness. Evolution is simply the accumulation of speciation over time.

One critical concept required for the theory of evolution, usually left out of current teaching and largely unknown to (or rejected by) religious zealots, it the idea of 'deep time.' Essentially, what is not possible in a few hundred or even a few thousand years is not only possible but virtually certain over millions to billions of years.

Answer 3

Just read the "Origin of Species". Very few of the respondants do. Darwin was a naturalist in the early 19th Century, which was a combination of a botonist and zoologist. He was initially interested in changes WITHIN a species due to breeding, such as dogs, horses, etc. He noted that while the breeds changed, dogs remained dogs. In 1831-33, he went on an expedition around South America, and particularly to the Galapagos Islands, a very remote part of the world. He noted that different SPECIES appeared to be variations on other SPECIES, and that both species could be considered as non-supervised breeds of an earlier species. He surmised that this process could account for the development of existing species from earlier versions, and that species that had ceased to exist somehow could not develop variations that could survive. If you understand that, you really know the heart of the theory, whether you choose to believe it or not.

Answer 4

Go to www.wikipedia.com and type "evolution" into the search box. You will find extensive information on the theory.

To provide a brief answer to the question...

In any given population of a species, mutation is bound to happen. Natural selection works on these mutations, choosing those that actually help a lifeform in its environment. Over time, with enough change, new sorts of life emerges.

This is how all life, in its insane variety, has come about.

Answer 5

I agree, you really must read Darwin's book Origin of Species. It is highly accessible to the educated reader. It's a shame, though, so many must resort to self-education to learn about it due to the religious right's influence over education.

The basics are very simple. If you have something that makes copies of itself with random heritable variations to it's template, and there are natural challenges that impede its ability to do so, then the descendants will "evolve" over generations to adapt to those challenges due to simple statistics. If over time, variations from the parent stock become significant, then "speciation" is said to occur (a new species evolves).

Answer 6

I believe Darwin's Theory on evolution was based on man evolving from an ape type similar to the animals of today evolveing from dinosaurs...try research man's evolution...Hope that will point you in the right direction

Answer 7

Species will adapt to their environment by adaptions, the mutations that take advantage of situations better tend to survive and it is passed on

Answer 8

It is simple.

Against all laws of thermodynamics, evolutionists believe chaos organized itself and created complex lifeforms out of elements found naturally in a dead nature. These complex lifeforms defied all reason and perfected themselves to the level they are today. Of course, they stopped evolving at some time.

Actually, Darwin mistook the law of adaptation and called it evolution. Even he did not believe in it.

The reality is, and many respected scientists believe, a kind and loving God created this earth and put the plants and animals here for us to use. Man was the crowning achievement.

Answer 9

his theory was that all animals evolve depending many factors like location and that they adjust to where they live

Answer 10

dawins theory was similar to darwins, only dawin was a raging alcoholic who beat his wife, so he was basically laughed at and never taken seriously. some people, however, believe he was really actually a genius. you are welcome.