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Evolution
The scientific theory according to which populations change gradually through a process of natural selection.
5,264 Questions
What are fossils and what do they tell us about the process of evolution?
Fossil the dead remains of plants and animals that lived in the past is know as fossil.
- Evolution was not entirely devised by Charles Darwin; there were many evolutionists before Darwin, though he was the one who pulled the connections together.
- The acceptance of Evolution in school was tested in 1925 with the Scopes trial. A young teacher, John Scopes, taught his Biology class Evolution instead of Creation and was consequently found guilty and fined for teaching the non-Biblical account of life.
- On the Origin of Species, the most important book in the Evolutionary world, was published in 1859.
- The smallest unit of evolutionary change is a population, not an individual.
- Darwin's evolutionary theory provoked other theories such as "Social Darwinism."
- Evolution is the gradual changes occur in a living organism with the passage of time.
- The most amazing fact is that the offspring of a living organism shows small differences from their parents but after some generations (eg. after 4 generations) the organisms of last generation (4th generation) are totally different from the very first generation! giraffe's long neck is due to evolution because the neck of first giraffe was not long as compared to modern giraffe!
I am not going to debate evolution vs. creation, but I will answer your question. There are no "facts". A fact is something that is proven. Evolution has many flaws, and is definitely not a fact, so there are no facts about evolution.
Sources:
Me, smart people I know, text books, and the Internet.
(If you do not believe me, just search the Internet, it will give more info on why there are no facts about evolution.)
The theory that evolution occurs slowly but steadily is called?
Darwin's classic theory of evolution assumed that evolution is a slow, contunuous process, by which new species evolve and emerge. This is referred to at times as "organic evolution" and the "synthetic theory of evolution", or just the Darwinian theory of evolution. A newer theory, proposed originally by Niles Eldridge and Stephen Jay Gould is known as "punctuated equilibria", a model in which the evloution of new species occurs only periodically, in relatively rapid spurts. See "Time Frames the Rethinking of Darwinian Evolution and the Theory of Punctuated Equilibraia, Simon & Schuster, 1985"
AnswerThe slow, constant process has also been called "gradualism."History and evolution of public relations in India?
Although public relations is well over one hundred years old, didn't spread to India until the 1990s. At first, it was media relations, and nothing else. Then, journalists started spreading it around the country.
Describe an example of divergent evolution?
The human foot verses the chimpanzees foot, for instance. Both organisms diverged from common ancestry, but their feet were subject to vastly different environmental pressures and function in very different ways now, though their commonality is rather obvious.
What explains how variations can lead to changes in a species?
variatio brings about evolutionary change with in species as over millions of years the have to adapt to the ever changing habbitats. take the horse for example millions of years ago it used to have multiple toes.yet over millions of years it has evolved to only have one toe
What is the importance of carbon in biology?
Any compound with elements C,H,O are called organic compounds. SO Carbon helps make organic compounds. Examples of polymers that are made of these elements are Polysaccharides, Proteins (with N and sometimes s and p), Nucleic Acids (DNA, RNA), and although not a polysaccharide, Lipids (Fats, oils and waxes) Each of these biomacromolecules are important in biology...if you know the important of these then you know the importance of Carbon...eg. Polysaccharides for energy, engergy storage, structural, Lipids for insulation, fat storage, water proofing, Proteins for Structure, hormones, enzymes, Nucleic Acids to code for the synthesis of Proteins and carrying on genetic information on to the next generation.. Hope that helped.
How does the survival of the fittest relate to the theory of evolution?
People often think of evolution as what they call survival of the fittest. However, that means a fight among members of a species. This is not what is really meant.
The 'fight' is with the environment and the species and not a fight of one individual with another.
If the species has a way of best surviving what the environment throws at it, it will survive. Other species might not and will die out.
Which of the following was not part of Darwin's theory of natural selection?
A: More offspring are produced within a population of a species than can generally survive. B: More offspring are produced within a population of a species than can generally survive.
C: Some individuals possess features that increase their probability to survive compared to individuals lacking these features. D: Some individuals possess features that increase their probability to survive compared to individuals lacking these features
Individuals in a population of a species vary in many ways Individuals in a population of a species vary in many ways
Changes in the environment cause beneficial mutations.
What is the endosymbotic theory?
This theory states that the organelles found in cells were once their own independent cells. Throughout time, these independent organelles were consumed by bigger cells and not digested, but used in exchanged for their services.
What are two pieces of evidence for evolution?
1.) How gasses in space diffuse, and are not affected by gravity unless there is a big chunk of matter there, or a supernova compresses the gas (never been observed). This obviouslyproves that it is likely that the 10,000,000,000,000,000,000,000 stars out there were made by random processes and chance events.
2.) That (even though) mutations have only been observed being limited to small changes within a species, they somehowcreated new organs.
P.S. EVERY mutation must have happened within 10,000 years, because the sun is shrinking at about 5ft. (in diameter) every minute, and anywhere above 10,000 years, and the sun would be so big, it would fry every form of life on earth. (even though scientists insist it took millions of years)
What is the process in evolution leads to the adaptations in organisms that help them to survive?
Design!
Why are alternative views to evolution that propose a supernatural creator not scientific?
I'm not actually sure but I think it has something to do with the whole 'supernatural' thing and the fact that it is called 'supernatural phenomena' is because some dude decided that it was not real and therefore unnecessary to be looked into deeper. I mean vampires and werewolves and all of that are under the banner of 'supernatural' and you don't believe they're real do you? what is the point of looking into something that has already been "proven" not to exist. it's not likely you'd believe me if I said I were being haunted by the ghost of some person.
What are some examples of transitional fossils?
Transitional fossils are important because they are visual evidence of one type of animal evolving into another type of animal. A transitional fossil always contains features of one type and features of another.
For example, Archaeopteryx is a transitional fossil that is a cross between a dinosaur and a bird. It has a bony tail, teeth, and claws like a dinosaur, but it has feathers and is able to fly like a bird. It is an important link in the evolution from dinosaurs to birds.
What organism took the longest time to evolve?
Well, it is either a turtle or an alligator because they are very wise and I think they were living at the time of the dinosaurs. Thank You!
P.S. I think more of the Turtle because I saw it on a documentary!
That is of course if you are ruling out zooplankton.
Which is the best description of how the fossil record provides evidence of common ancestry?
Put simply, it doesn't. There really is no other reason, any archaeologist, paleontologist, geologist, or other professional in a field of artifact study will tell you that there is no "line" of creatures leading up to today's animals. For example humanoid skeletons where found conspicuously at the beginning of the Cambrian period and at no time before then, the only explanation for this is that an unaccounted for variable such as a "supernatural force" was present and not noticed
What interpretations of Ayers Rock are given by evolutionary scientists?
Ayer's Rock/Uluru is a sandstone formation in the centre of a desert.
Rocks are the area of geologists, not biologists. Evolutionary scientists wouldn't care either way about it (unless it happened to contain some new fossils or biological research material).
Phylogeny is the evolutionary history of a particular group of organisms or their genes. Phylogeny can be represented in a phylogenetic tree which graphically represents the lines of descent among organisms or their genes. Learn more at 23andme.com.
natural selection!
Compare a bird wing to a butterfly wing What kind of structure does this pair represent?
No they are not. Homologus structures are structures that originated from a common ancestor, they show similarity in anatomy and development even tho they may have different functions. For example the human arm and bird wing are homologus (pentadactyl limb).
Bird and insect wings are ANALOGUS, which means they show similar function but show no similar structural relationship.
How does an enzyme influence a biological reaction?
All reactions, even exergonic, need an activation energy to happen. Enzymes provide that activation energy. Sometimes by their R groups, sometimes by stressing bonds in a molecule in their activation site and sometimes by only providing a space apart from the cytosol in their activation site for two substrates to react.
Is fossil evidence used for the Theory of Evolution?
Fossils can be used as evidence for evolution because they can show the development of a species over a long period of time.
What did the ancestor of all modern tetrapods look like?
lizard The common ancestor of all modern tetrapods looked like a fish that had nubs the became limbs through evolution.
