1st piece of evidence-Vestigial structures. Vestigial structures are bones or other organs in an organism but are reduced in size and either have no use or have a less important function than they do in other related organisms. For example the hind limbs of whales, or the appendix of humans. Even humans tail bones are vestigial structures. They are thought to have helped previous organisms but are now less useful in their evolutionary counterpart.
2nd piece of evidence-Homologous structures. Homologous structures are structures that share a common ancestry. Otherwise a similar structure in two organisms can be found in the common ancestor of the organisms. As different organisms evolve so do their bodies. Similarities exist in the bone structure though can still be seen. Such as, the forelimbs of penguins, alligators, bats, and humans are all very similar in structure. Suggesting they all have a similar ancestor.
3rd piece of evidence-Amino Acidsequence. The amino acid sequence which codes for an organism's protein. The prediction was first tested by analyzing the amino acid sequences of similar proteins found in several species. If evolution has taken place, then, in general, species descended from a recent common ancestor should have fewer amino acid differences between their proteins that do species that share a common ancestor in the more distant past. Example- the amino acid difference between humans and gorillas is just one, and the difference between humans and a Rhesus monkey is only 8. Although the difference between a human and a frog is 87.
Although there are several pieces of evidence leading to evolution, I do not believe in it. I believe God making Adam and Eve which led to more children, who then led to even more children, which has then started the human race. That is just my perspective though, although evidence suggests otherwise. That is just three pieces of evidence that leads to evolution, there are quite a few more pieces of evidences towards evolution.
The different types of evidence used by scientists to support the Theory of Evolution include:
As scientists explore down the geological column, they see changes that are remarkably consistent with the Theory of Evolution. One example is the transition of sarcopterygian lungfish into Devonian amphibians. Another is Archeopteryx, an excellent transitional fossil to the avian dinosaurs.
With advances in our knowledge of DNA, scientists can reliably date when two related species, such as when chimpanzees and hominids, first split from a common ancestor.
In the absence of evolution, it could be expected that species would be randomly distributed around the world, wherever environmental conditions suited a species. Instead, species that are closely related by evolution are found in close proximity, but not in more distant areas that would also be environmentally suitable. One example is that virtually all mammals native to Australia are marsupials. The placentals (besides bats, rats, mice, and dingos) did not make it across the Pacific barrier.
A good scientific theory should be capable of predicting facts not already known. The Theory of Evolution was used to predict that a transition species between fish and early amphibians should be found in an appropriate location, such as certain areas of the Canadian Arctic. The outcome was the discovery of ancient Tiktaalik roseae fossils.
Fossils of transitional species are common, rife in the geologic record. Many of the Devonian amphibians are excellent examples of this.
Another example is the evolution of drug resistance in bacteria. A particular drug may prove 100% fatal to colonies of a particular type of bacteria, but over generations a mutation will crop up creating a resistance that continued exposure to ever increasing dosages becomes fixed within the population. This evolution has been observed and carefully documented.
There are literally thousands of other examples. Every year biologists publish hundreds of peer reviewed papers detailing one or another example of evolution.
There are countless examples that evolution is present and active on Earth-
1. Darwin's finches evolved varying beaks that suited different forms of food that was consumed. The beaks are continuing to evolve to this day.
2. A population of tropical butterflies (Blue Moon butterflies) have evolved a resistance to a deadly bacteria. The Bacteria infects the female and then attacks the male eggs and kills them before they hatch. In under a year (10 generations for butterflies) the butterflies have the bacteria under control with a "suppressor gene" that was discovered in the butterfly.
3. An Australian breed of lizard have gradually (over 3 million years) evolved to lose their limbs and become more snakelike.
Not all evolution is as fast as the Blue Moon butterfly, however- there is proof that evolution is ongoing and inevitable part of life.
Actually, there's just one line: nested hierarchies.
No, wait - there's two lines: morphological and genetic.
No, hold on - those aren't the two lines; the two lines are extant and extinct.
No, just a second...
As you may have guessed by now, the number four is entirely arbitrary. You can distribute the many independent lines of evidence for evolution over as many or as few distinct boxes as you want.
adaptation, extinction, and the creating of new species
vestgial structures
fossils
embryology
also a big one is that there is a universal genetic code
Biological molecules, DNA and fossils - good luck with your exam tomorrow!
Well its big bang (which I believe is crap) Darwins natural selection therory (makes sense) and (Anarobic/arobic beggining) (more crap)
Fossils, genes and embryological development.
The theory predicts that evolution will happen and in certain ways. The observed evolution makes this prediction correct. It also defines evolution as happening, and as such is perfect evidence in support of it.
There is strong support for the theory of evolution due to fossils that have been found by archeologists. The fossil records show evidence of evolution over billions of years.
There is no proven theory of evolution only the physical evidence of what Chuck Norris has allowed to live.
A theory is an idea system with a lot of evidence to support it--for example, the theory of evolution. A law (in science) is an idea system with proof attached to it--no contradictions--example, the law of gravitation.
Fossils can be used as evidence for evolution because they can show the development of a species over a long period of time.
The theory predicts that evolution will happen and in certain ways. The observed evolution makes this prediction correct. It also defines evolution as happening, and as such is perfect evidence in support of it.
I do not so much " believe it " as I an convinced by the myriad lines of converging evidences that support the theory of evolution by natural selection. talkorigins.org
There is strong support for the theory of evolution due to fossils that have been found by archeologists. The fossil records show evidence of evolution over billions of years.
There is no proven theory of evolution only the physical evidence of what Chuck Norris has allowed to live.
the continents fit together like a puzzle
Probably more in the line of many converging pieces of evidence in support of theory. Theory is explanation and fossils are just mineralized bones in the rock. which need and explanation. The fossil record supports the theory of evolution by natural selection and, some say, the theory of punctuated equilibrium.
Scientists did not prove things then anymore than they prove things now. Evidence, masses of converging evidence support the theory of evolution by natural selection. Darwin, in his day, had much evidence to support his theory. All the way from artificial selection to island biogeography. Since that time the theory has moved on to where it is no longer just Darwin's theory, but modified and supported with so much evidence that the theory became the bedrock of biology. Go here. talkorigins.org
Yes, the theory of evolution is widely accepted as a scientific fact. It explains the diversity of living organisms on Earth through the process of natural selection, genetic variation, and adaptation over time. Multiple lines of evidence from various scientific fields support the theory of evolution.
The pieces of evidence Alfred Wegener used to support his theory about continental drift were; Puzzle Fit, Fossil evidence from animals that were once on the same continent, geologic evidence like mountain chains that were connected and now split apart, and ice sheets. Thank you for reading this article and I hoped it answered your question!
Evidence of past glaciations have nothing to do with evolution except to show that the Earth is much older than 10,000 years old.
Intelligent design, Hovind Theory Added: The above are not scientific theories but more ideological assertions in nature. No positive evidence supports either assertion.
Yes. If evolution was not widely supported by evidence, then it would be regarded as a hypothesis rather than a theory.