theory of evolution?

Question

tell me about it...

Answer 1

The chicken and the egg both were cows that at one point, shrunk and grew unusable wings. Its very easy to understand.

Answer 2

The basic theory is that there is change in allele frequencies in populations throughout time.

This leads to evolution, because genetic variation exists within populations, that variation is heritable, and natural selection "chooses" the alleles best suited for the current environmental conditions, allowing the animals with those beneficial alleles to produce the most offspring in contribution to the next generation.

Evolution makes a lot of sense--you can see that there is a lot of variability in, for example, dog populations. We know that all of our current breeds of dogs came from one common ancestor, and that the subsequent breeds have arisen because someone bred dogs that were shorter or had longer hair or had some other desirable feature consistently, for several generations, until they produced a new breed. This is evolution, just human beings imposed natural selection on the traits they wanted most for their pets. Darwin actually used pigeon breeding and the wide variety of pigeons that had been created to explain a lot of his theory.

If you're interested in learning more about evolution, I would recommend Futuyma's textbook, Evolutionary Biology, as well as the book Why We Get Sick. Evolution and specifically the rapid evolution of new diseases is a huge and costly problem in the medical sector, and Why We Get Sick has a lot of brilliant examples. The textbook is just a clear and very well written overview of evolution.

Answer 3

At a very basic level we can see evolution going on in today's world in antibiotic resistant bacteria.

We invented penicillin. It killed 99% of the bacteria living then. However, that 1% survived and produced more antibiotic resistant bacteria. We invented other antibiotics. Once again, the bacteria evolved to be resistant.

This is how evolution works. Something in the environment causes some organisms to die but some are able to survive and reproduce. Those that do reproduce tend to pass on the characteristic that allowed them to live.

Answer 4

The original idea of evolution was a hoax cooked up by Darwin himself. The original idea holds no water what so ever. But like any evil church, over the years the truth has been buried and the craftiness of men has been used to blind the dumb.
http://www.evolutiondeceit.com/chapter9.php

Answer 5

survival of the best fitted.
everyone does the best for his genes to spread.

absolute number of your genes in next generation is your sucess, the higher it is the higher you score.

relative number of your genes in gene pool of the next generation may help your abolute score, if the genes are viable.

your species members are the worst concurents, since they are using the same teritorry, same niche, same food and same mating partners like you do. only exceptance are your direct relatives. the closer the better they have higher ratio of your own genes.

Answer 6

Darwin's 'guess' as to how every living thing could possibly be here as what they are without the application of religious belief.