define the theory of evolution?

Answer 1

In biology, evolution is the change in the heritable traits of a population over successive generations, as determined by shifts in the allele frequencies of genes. Over time, this process can result in speciation, the development of new species from existing ones.

Answer 2

I have been studying Science for the last 10 years
and as for the Theory of Evolution, it is Just that a Theory.
it is basically like trying to guess what a picture is by only looking at less than one percent of the whole picture.
There are millions of species alive today, and many more species have gone extinct over the history of this planet. also out of the billions of single life forms that have lived on this planet very few Fossils have actually been discovered.(this is the <1%)
these fossils that have been discovered have been used to map out a Theory of Evolution composed of Plateus (rungs of a ladder or steps on a staircase, but with nothing connecting the steps or rungs together) of species. But there are no fossils that have been found that are between these Plateus. for the Theory to ever become a Fact what is reqired is to find fossils that clearly show the change of one species into another (rope, rope-ladder(rungs), or chain of fossil evidence, when graphed will show a slope with horizontal flat sections) or for some currently living animal to give birth to something that is unable to reproduce with the Mother species but is able to reproduce with one that is identical to it.

An Evolutionary-Mutation would be fertile,but would have a completely different Genome from the Parent Species, unlike a normal mutation which damages the genetic code leaving the child infertile or with severe birth defects that ussually end in death, example is a mule which is the cross between a donkey and a horse. though it is similar to the parent species it is unable to reproduce with either species or with other crosses. it is therefor infertile and therefor it is a mutation and is not considered a new species.

Many people have tried to claim that the Finches of Galapagos Island and other areas of the world are able to evolve. This is not the case all it is is a case of specialization. it is simply a case of rececive genes taking dominance through variences in food availability. (the differences noticed in the Finches have been beak sizes and shapes).

As food availability changes the finches that have the genes which will enable them to make the best use of the available foods will gain dominance over those finches whose beak genes are specialized toward the food that is out of season or no longer available. therefor the average shape of the beaks will change over time in acordance to what food is readily available.

The finches have not changed species thay have just become specialized within their species. tThis can also cause some Genes to become extinct within a Species or Race. this is why "Race" could even be concidered to exist. Can make the Species Stronger or weaker based on what genes are lost over time.

On the other hand if the finches were no longer able to reproduce with the parent species but were only able to reproduce with other finches with the same beak size and shape then that Would mean that they had undergone Evolutionary-Mutation.
But this could only be tested in a Labratory under Precice Conditions.

Evolution is a theory that all living creatures evolved from some a common evolutionary ancestor.
Evolution also states that this creature evolved from rocks and rain. the reverse steps are
Animals and Plants
Single Celled Organism
Prehistoric Cell, Mitocondria, and Chloroplasts
Ooze that contains building blocks of life
Rocks and Acid Rain
Lava and Gases from volcanoes.
That is what unpure-science claims you evolved from, in that order.

after all how does a quatinary biological programing language (DNA) that works actually come into existance by accident.
there is too much order in the universe for it to have just happened.
and even though there is the theory that an organism arrived on earth via a comet or asteroid it still had to come from some where and if you are saying it evolved it still came from a rock.

Answer 3

Evolution is the passing down of traits from parent to offspring in which certain alleles that increase survival and reproduction rates are favored by natural selection. Over time the frequency of these alleles may rise and if the changes are significant enough, a new species will develop that is unable to breed with the source population. Mutation also plays a part, but the mutation has to be genetic, somatic(body) cell mutation is not capable of being passed down.

Answer 4

Evolution occurs when the gene pool of a species is differentiated by the theory of natural selection and results in permanent changes to a species inherited characteristics.

Answer 5

The theory of evolution a theory that Charles darwin came up with. He also invented the theory of natural selection.

Answer 6

Life forms pass their characteristics down to their offspring. Occaisionally, mutations occur. Nature selects the mutations most likely to increase the chances of survival and reproduction, so those mutations become the norm among the population. Eventually, new species result from the changes.

Answer 7

Those who cannot adapt to the natural surroundings eventually die out and those who can, thrive. Their genes are passed on and sometime improve for each generation (bigger, sharper beak, smarter).

This takes years upon years of failures and successes to become obvious, but it is really quite amazing to trace. Sometimes it takes 100,000 years to become obvious! This time frame is hardly a blink of an eye to the universe.

It is exquisitely engineered.

Answer 8

simply ,the strong survive .Random radiation,and other changes DNA 's offspring and some changes are good and others not ....the good is passed down to the next generation , the bad die off.

Answer 9

Could be "UnChristian". Sorry, I couldn't resist :-)