In DNA extraction from different sources, would you expect the same results from different cellular materials?
457615
yes - if the DNA sources were from the same individual - person.
1174731
What extract are you talking about? Different materials require different extraction methods.
1128643
A model of a cell is a good choice.
931137
It really depends on the lab.  In my lab, they extract DNA and run markers to find what genes the animal has.  In other labs, you may find the actual sequence of the DNA (A-C-T-G).  Genetics is a large field and no two labs do the same thing.
1133910
DNA has already been cloned, so your question is meaningless. This was done in bacteria over 40 years ago, and is how human insulin is now produced en masse.
160028
This is still an unresolved question.  While DNA can be extracted from ancient bones, whole cells have not been.  To count the number of chromosomes, one would need an intact cell, or at least a nucleus.  This may never be possible because of degredation of cellular material over time.
310677
Bones contain cells, osteoclasts and osteoplasts.  I remember a colleague doing studies on ancient camel bones to look for genetic variation.  So, yes, DNA can be extracted.  Usually it's so fragmented though.  Maybe DNA can be obtained, maybe not.  This level of technology may be beyond us yet still.  We are talking of something that is hundreds of millions years old, not just a few thousand.
641532
Its hard to see yes but if you think about it like this it makes sense.  It would be impossible to have different genes in each specialized cell.  This is because what do we start out as?  One cell.  The we go through a duplication stage where we make more cells identical to that cell.  So all of the cells in our bodies have the same DNA.  In order to specialize, our cells have to vary in gene expression because all of our cells have the same genetic material.
569604
It's a process where DNA is moved and separated by electrical currents bands are formed on a gel called agarose.  It shows similarities and differences between relations and non relatives.  The gel created is unique to you and therefore is how DNA testing can tell if the DNA supplied came from a certain source
362512
It doesn't matter that they are fish cells.\nThey will look the same as these stages in any other cell except there will be a different number of chromosomes
612256
Those portions of DNA are probably difficult to replicate properly (or perfectly I should say).  What's the difference between 5,000 repeats and 4,995?  Not much as far as the cell is concerned.
272370
They get it from another cell.  Just a regular adult cell out of hte donor.  (For Dolly the sheep they used a sheep mammary cell)
783548
The short answer is no.\n\nThe long answer is no, never, not ever, no how, no way, don't even think about it, impossible, etc... :)\n\nDNA is the instruction manual for every living multicellular organism and is contained in every nucleus of every cell in the body.  It is physically impossible to extract DNA from an organism without killing it, liquifying it, and separating the nucleic acids from all the other proteins.  Not something anyone would volunteer for, I would imagine.  Then you would have to figure out how to insert this into trillions upon trillions of cells before the receiving body dies due to lack of protein production.\n\nAlso, even if somehow you were able to extract DNA from every cell and replace it with some other DNA, you would end up destroying the organism anyway.   Changing the DNA is like using a cake recipe to build a car engine.  You would only end up with a mess under the hood.  \n\nEven if you replaced the DNA with another human being's DNA, there would be such severe rejection because of the production of non-self proteins and HLA mismatches that the body would almost immediately cease to function.  It is difficult enough to transplant a heart without causing rejection by the host body because of specific proteins found in the donor organ.  Imagine what would happen if every cell was doing the same thing... think of that senator character from the first X-men movie.
325792
of coarse. DNA is found in every cell. not just semen.
16328
DNA testing can be pretty accurate, but it depends on how many sequences they test.  If you read my test procedure explanation you will understand why DNA is used.\n\nFirst, Carbohydrates and lipids are pretty much identical between all people.  A few people have metabolic disorders that result in a build up of certain carbs, but generally it would be useless to test for the specific carb or lipid present, because they are the same for everyone.\n\nProteins do differ among people, but not as much as DNA does.  DNA provides the information telling ribosomes how to put proteins together in people, but only a small portion of DNA is ever tranlsated to protein.  Most of your DNA is junk, and the big DNA differences between two people are in this junk DNA, so that is what is used for DNA testing.\n\nThis is an explanation of how it is typically done:\n\nThe way DNA testing works is by measuring the lengths of DNA segments between two endonuclease cleavage sites.  An endonuclease is an enzyme that will cleave DNA at a particular sequence of bases.  Some specific cleavage sites exist in the DNA of all people.  In between two specific cleavage sites, you may have a sequence of tandem repeat DNA.  For example le us say your DNA looks like this:\n(Cleave) gene1-TGTGTGTGTGTG-gene2 (Cleave)\nWe will denote this length of tandem repeat segment as (TG)6.  My DNA may have a tandem repeat segment may be (TG)10, in which case the segment of DNA between the two cleavage points is longer for me than it is for you.  This additional length also makes it heavier.\n\nNow let us make a suspend lots of copies of this particular segment of your DNA in a fluid and make another suspension with my DNA.  \n\nLet us also say that we know that everyone has a sequence of TG repeats at least 6 repeats long.  The complement to this sequence is:\nACACACACACAC -> (AC)6\nWe could create a radio labelled (AC)6 probe and sprinkle it into the suspension with your DNA, the suspension with my DNA, and a suspension with unknown DNA.  This probe would bind to the DNA in all three solutions, but my DNA segment would still be heavier than yours, because it contains 10 repeats, even if only 6 are bound to the probe.\n\nWe now place some of the suspension of your DNA at a point on an adsorbent surface.  The suspnsion will travel along the surface, but at some point the DNA will stick to the surface.  If it is heavier it will stick sooner.  With good equipment all DNA of a certain length will stick at the same spot (or short line)\n\nSince my DNA is heavier than yours, mine will travel less far.  The unknown DNA will travel either as far as your DNA does or as far as my DNA does, and that will tell whose DNA it is.\n\nThe way you view the DNA on the adsorbent surface is with a film that will darken when exposed to our radio labelled probe.  You place this film on top of the adsorbent bed with the DNA samples and three small spots (or short lines) will show.  The distance the unknown DNA travelled in comparison to your DNA and mine tells us whose DNA it is.\n\nInvestigators do this with evidence; only they use many different tandem repeat segments scattered throughout the genome.  The more segments used, the lower the probability of a coincidence.
789937
There is a great deal missing from this article. Whether or not it is life is questionable. That the material is called "cells" indicates that the material is self-reproducing 'autonomously', and I don't know that's been proved yet.\n\nAlso, yet to be proved, is the idea that the material is of extraterrestrial origin. There are many new types of life being found on earth almost daily. True most of these are just variations of species, but we are finding life in places never before thought possible.\n\nWithout DNA, some other sort of self-replication mechanism needs to be present, and the article made no claims to what form this mechanism takes. I would need to see a great deal more to be convinced of any of the claims made in the article.\n\nThat's not to say I couldn't believe, but I just need more information.
1111016
It doesn't matter in what order they go the lab, unless your specific lab has a protocol in place to make sure the specimens don't get lost.\n\nThe different labs do different things with the samples; they are not inter-related.