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What three structures are found in all mammalian cells despite three billion years of evolution?
Wiki User
∙ 11y ago
Cytoplasm nucleus cell membrane
Wiki User
∙ 11y ago
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What is the evolutionary relationship between a fin and flipper?
They're an example of convergent evolution - two structures with common features which have evolved like that due to a similar/the same purpose despite having unrelated origins. Flippers have hidden fingers.
does every type of living thing go through evolution?
There is always a cycle despite the no. of the stages of all living things.
How is biochemistry used as evidence of evolution?
Biochemical evidence is one of the most convincing arguments in favour of evolution. All organisms use the same energy "currency" of ATP (adenosine tri-phosphate) during respiration, despite there being no reason for it. In the protein chains of organisms, the constituent amino acids are the same 20 amino acids which all organisms use. The DNA code is remarkably similar in organisms. The difference between our genome and that of a chimpanzee is <1%. Also, the DNA itself is made up of the same four bases - guanine, cytosine, adenosine and thymine (uracil in RNA) - despite this also being unnecessary.
What are the advantages and disadvantages of foetal bovine serum?
The primary advantage of fetal bovine serum (FBS) is that is contains essential proteins and nutrients that are required for the growth of eukaryotic cells in culture. It becomes far too laborious to create an artificial medium that contains ALL the components required for mammalian cell growthin vitro. Therefore, FBS is used as a media component. The disadvantages however, are the cost and the fact that the exact composition of FBS is not known. Since the product is obtained from an animal source, the components in FBS are not precisely quantified. Also, there could be slight variations in the quality of FBS from one batch to another. However, with modern day Biotechnology industries investing on quality control and quality assurance, the second disadvantage is taken care of. Despite the cost, FBS remains an invaluable media component in research work concerning mammalian cells
What types of evidence is are there for evolution?
The most obvious evidence is that we can observe evolution happening before our very eyes. There are many examples of this, and many experiments have been done and it is shown that beneficial mutations do arise and that organisms do indeed evolve by natural selection.Artificial selection is strong evidence for evolution. Humans acted as selecting agents and forced non random mating in animals, which resulted in a huge diversity of variations. A good example is the different breeds of dogs, all have been artifically selected for their traits. Taking this further, nature can act as a selecting agent through differential survival and produce non random mating.Fossil record is a powerful evidence. The sequence of fossils in the sedimentary layers matches what the evolution theory predicted perfectly. There is not a single out of sequence fossil in the fossil record. Also, there are many fossils that show the entire evolutionary process, for example, the evolution of whales from land dwelling mammals, the evolution of horses, and despite popular misconception, the evolution of humans is well documented by fossils.The geographic distribution of animals is also exactly what we would expect if animals had all evolved from a common ancestor. There are no native mammals in Australia and New Zealand, except for the bat which can fly there, but is unique to marsupial species. Animals on islands differ slightly from the nearest mainland, showing speciation.Molecular data is by far the most powerful evidence for evolution. Our DNA is 98% identical to chimps, which we share the most recent common ancestor with, and it is slightly less identical to gorillas, and even lessly similar to rats, and even lesser compared to fish, and so on. We can make a tree of life using DNA data with their degrees of similarity, and if we take different proteins and compare their DNA independently, they all agree on the same tree.I summarized those evidences from The Greatest Show on Earth -- the evidence for evolution, by Richard Dawkins.
What is the evolutionary relationship between a fin and flipper?
They're an example of convergent evolution - two structures with common features which have evolved like that due to a similar/the same purpose despite having unrelated origins. Flippers have hidden fingers.
What is the evolutionary relationship between a fish's fin and a whale's flipper?
They're an example of convergent evolution - two structures with common features which have evolved like that due to a similar/the same purpose despite having unrelated origins. Flippers have hidden fingers.
How do you change a phione into a manaphy?
Phione does not evolve into Manaphy. Despite the fact that you get it from breeding a Manaphy and a Ditto, it does not have an evolution.
Do hedgehogs and echidnas show an example of divergent evolution?
Hedgehogs and echidnas show convergent evolution. Despite being far apart, they ended up looking very similar. Like sharks and dolphins.
Are all scientists who believe that evolution is correct atheists?
No, some actually profess faith even despite the truth. That is fine.
When does luvdisc evelove?
Luvdisc has no evolutions. What appeared to be a Luvdisc evolution was announced for Pokemon Black and White, but despite resemblance, the two are not related.
does every type of living thing go through evolution?
There is always a cycle despite the no. of the stages of all living things.
Will Kitty and Kurt end up together x men evolution?
No. Despite their popularity as a non-canon couple, Kurt and Kitty never became anything more than friends in the X-men: Evolution cartoon. And in the X-men: Evolution comic, they never progressed beyond flirting.
Who was defeated in the Civil War in China despite 2 billion dollars in aid sent to them from the US?
The Nationalist were defeated by the Chinese Communists.
How is the sun still there?
The Sun will be "there" for about 12 billion years since it's creation. 4.6 billion years have passed the creation and therefore in 7.4 billion years the Sun will be a white dwarf. In 5.4 billion years the Sun will grow to a red giant. --------------------------- Also, despite the first answer, the Earth rotates and spins around the Sun.
What is an example of co-evolution in a ocean?
Whales and Sharks are examples of coevoultion. they have very similar body shapes despite only being remotely related.
Africa richest people?
Despite the belief that Africa is a poorer country, many of the richest people in the world live there. These people include Aliko Dangote whose worth is almost $21 billion, Johann Rupert whose worth is $7.9 billion, and Nicky Oppenheimer whose worth is $6.6 billion.
