what is darwins theory of evolution?

Question

what prosess drives evolution

if any one knows its due tomorow for home work plzz help me!!

Answer 1

Darwin's Theory of Evolution is the widely held notion that all life is related and has descended from a common ancestor: the birds and the bananas, the fishes and the flowers -- all related. Darwin's general theory presumes the development of life from non-life and stresses a purely naturalistic (undirected) "descent with modification". That is, complex creatures evolve from more simplistic ancestors naturally over time. In a nutshell, as random genetic mutations occur within an organism's genetic code, the beneficial mutations are preserved because they aid survival -- a process known as "natural selection." These beneficial mutations are passed on to the next generation. Over time, beneficial mutations accumulate and the result is an entirely different organism (not just a variation of the original, but an entirely different creature).

Answer 2

darwin's theory of evolution says the population changes according to the environment. When the climate changes to a colder climate, the ones that are strong enough to bear the low tempearture survive and leave their offspring. So in the next generation, the population will have more members that can go through colder climate. Another example is that when the food on the ground become scarce and only there are food left in the tall trees, only the members that are tall enough to reach it will survive and bear the offspring. So over the time, the population will gradually change their shape and they would look much different after milions of generations, when there were significant environmental changes.

Originally species have all types of possibilites of becoming anything. For example, look at dogs. They are from wolves, but yet they now exist in various forms from chihuauas to St. Bernard. So when certain environmental factors arise, any special characters will specially selected among them and later generations would look totally different from the previoius generations. I think this kind of evolution also had occured in human when we look at such differences in shape among different races and ethnic groups. So I think these are the proofs that evolutions are taking places even now. But all these are still humans, the homo sapiens. Personally i never learned a species changing from another species over the genertations, but some evolutionists argue that we evolved from monkeys and fishes and from the dust and inorganic stuffs. But I don't know, you can believe whatever you want on this.

Answer 3

Basically those things with good traits survive best and become dominant and pass on those favorable traits. Like a giraffe with along neck being able to reach tree leaves would survive better than one the size of a dog.

Answer 4

Darwin believed that all life forms continuously adapt to their surroundings through evolution.

Answer 5

survival of the fittest.
like the bigger and stronger will defeat the smaller.
yepyep. like we humans, have control over most creatures. yes we are bigger, but in our case we're smarter.
evolution is that we humans evolved from monkeys.
the MAIN thing however is survival of the fittest, the strongest survive
hope this helped =]]
♥

Answer 6

evolution is change in allele frequency
the process that drives it is white owl blunts and st ides 40s

Answer 7

crap. darwin also later confessed that the he made up the whole thing and denied its authenticity before he died. he came up with it mainly to make his father, who was a dominating quaker, mad.

Answer 8

Survival of the fittest by means of natural (sexual) selection.

Answer 9

http://www.allaboutscience.org/darwins-theory-of-evolution.htm

Answer 10

seriously, wiki is a better resource than yahoo answers for these dilemmas