A phylogenetic tree that is rooted is one?
At whose base is located at the common ancestor of all taxa depicted on the tree.
lemarck ideas of evolution are known as the inheritance of acquire characteristic what was incorrect about his theory of how organisms evole
How did Darwin attempt to determine how modifications of a species are accomplished?
He didn't understand how modifications of species occurred. His theories have stood the test of time when the actual mechanisms were discovered. Further scientific evidence has overwhelmingly proven his basic ideas were correct.
it is when a virus changes its natural host to a new host. ex. from an animal to a human.
What type of diagram do scientists use to show how species are related?
Wherever they're found, all living things are related because they all share a common ancestor. To show how species are related, scientists create diagrams called cladograms. Like a family tree, a cladogram shows close and distant relatives. Scientists call the family tree for all species on Earth the "Tree of Life."
Is it correct that life evolved in the Cambrian and humans evolved in Africa?
While it is certainly true that life diversified significantly during the Cambrian, it did not originate in the Cambrian, but roughly three billion years before that. And yes, the first populations of anatomically modern humans are thought to have emerged in Africa.
Explain why you feel a draft when someone leaves the door open on a cold night?
because cold air gets in
Isn't evolution just a theory that remains unproven?
Evolution is a scientific theory. It is important to qualify the theory as 'scientific', because when people use the word theory in 'normal' conversation, they mean a hunch or a guess. Scientists have a word for that. In science, this type of intelligent guessing is called a hypothesis. A scientific theory, however, carries much more importance. Scientists do not lightly assign the term theory to an idea. There are many experiments and observations by many scientists over a large span of time.
Every idea starts as a hypothesis in science. Then the hypothesis is tested by many people for a long time (decades in the case of evolution). During this time of testing (which in the case of theories is always ongoing), if all of the evidence agrees with the hypothesis, the hypothesis graduates to a theory. However! Scientists are skeptical people and they will not be satisfied unless they CAN DISPROVE THE THEORY. Yes. Scientists do everything in their power to prove theories INCORRECT! They have been unsuccessful proving the theory of evolution wrong and as such the theory of evolution remains the champion theory for the amount of supporting evidence.
The reason that scientists call it a 'theory', is the same reason that scientists call gravity a theory. The cell theory, for example, states that all cells are the basic unit of structure in every living thing, but scientists cannot test every living thing to check to see if there are, indeed, cells in every living thing: Living things have been around for a long time and the larger amount of them have died; not to mention the fact that there is more life on this planet than could be studied by all of the 6.5 billion humans combined; there is also the chance idea that life could be elsewhere in the universe. However, there hasn't been a living thing so far, that has been found that wasn't composed of cells. Just like there hasn't been a case where gravity hasn't caused an invisible pull between two celestial bodies. The same is true with evolution. For example, one of the driving forces of evolution is natural selection. So far, the most critical scientists have been unable to observe any living thing that is immune to the effects of natural selection.
In short, the 'Theory' of evolution is as factual as the theory that your body needs nutrients as an energy source for survival. Is it true in all cases... so far the evidence says 'yes'. To understand more about scientific theories or evolutionary theories, I have included two websites: http://www.gate.net/~rwms/EvoEvidence.html - for evolution. http://teacher.pas.rochester.edu/phy_labs/appendixe/appendixe.html - for scientific theories. Simply copy and paste one of these addresses into the address bar to learn more.
What are the problems associated with animal survival in terrestrial environments?
Some problems associated with animal survival in terrestrial environments include competition for resources such as food and water, predation, habitat destruction, and exposure to extreme weather conditions. Additionally, diseases and parasites can pose a threat to animal populations in these environments.
What is the mechanism of evolution?
The main driving mechanism of evolution is natural selection. Though genetic drigt and gene flow can also cause evolution.
How has evolution aided organisms in meeting their need for energy?
Some of the adaptations they develop through Evolution help them acquire energy.
What are three examples of environmental changes involved in evolution?
Three changes are probably global temperature change(Ice Age,NOW), and...nothing else. This is most likely the only environmental change that affects evolution.
What did lamarck think evolution involved that caused his idea to be incorrect?
Lamarck's folly was that he thought evolution was caused by acquired traits being passed down from parent to offspring. An acquired trait is one which an organism acquires during its lifetime. This theory would suggest that a bodybuilder, who has bulked up during the course of his or her life, could pass a super-muscular physique on to the next generation. Of course we know this is not the case. The only way the bodybuilder's child is going to have a super-muscular physique is if the child also becomes a bodybuilder. The bodybuilder's child could even sit around all day eating Cheetos and playing Video Games, resulting in a very different physique from his or her parents.
Darwin's theory of evolution, the correct one, tells us that evolution is caused by inherited traits passed from parent to offspring. If a parent is naturally more muscular than average, this is a trait resulting from his or her genetics, and its possible that the child will inherit this genetic makeup and also be more muscular than average.
True or false The theory of evolution is more certain than the law of gravity?
False ... but only by a little.
It's no longer the "Law" of gravity. Particles were found that do not obey the law, thus they must refer to it as a "theory" until they can revise the law. So, if we want to split hairs, in scientific terms, they are of equal validity. But those who believe in intelligent design can argue otherwise. So can the members of the flat Earth society ... with better logic.
How many evolution forms does dragonoid have?
Bakugan
1.dragonoid
2.delta dragonoid
3.ultra dragonoid
4.infinity dragonoid
5.hyper dragonoid
6.neo dragonoid
7.cross dragonoid
8.helix dragonoid
9.lumino dragonoid
10.blitz dragonoid
11.titanium dragonoid 12. mercury dragonoid
What is the Evolution of project management?
One evolution is from simple project management methodologies for people and organizations just looking to get a handle on a to do list. then on through a fully mature project management methodology and a project management software system.
What is the process by which corals are said to bud?
obviously they are buds and they are hanging out with each other, and multiply. Basically an asexual reproduction
What is the name of your oldest common ancestor?
We evolved about 500 million years ago from fish that evolved to anphibians then mammals then we evolved to primates
Meiosis aids in evolution because it does what?
Meiosis is when the male gene and the female gene combine chromosomes to make a child or offspring.
This increases the diversity of genes in an individual, and allows that diversity to spread through the population, thus effecting evolution.
Were all races originally black?
Yes. All humans were once adapted to life in Africa where all our distant ancestors used to live. Protection from UV-light is important, although pigmentation has costs. As groups of humans migrated from Africa to colder areas with less sun they needed more clothes for warmth. Since sunlight is needed to convert cholesterol into vitamin D3 there was a selection pressure for pigmentation to lessen among these populations. At the same time the selection to maintain pigmentation to protect against UV-light was reduced.
The blond extremes are (originally) found in northern Europe and on the British isles. Areas withvery little sunlight due to a northern location and the massive onslaught of clouds from the Atlantic weather systems.
The genetic diversity is still largest in Africa, meaning the two most distantly related humans today are both living in Africa.
How does the range of phenotype differ between single-gene traits and polygenic traits?
Single gene traits are either one type or another,for example everyone is either (ABO System) group A,B AB or O with no intermediates - this shows discontinuous variation.
In polgyenic traits, continuous variation is shown and there is a range with no discrete categories - height