Is it possible to extract DNA structures from fossils? How?
921355
dna from fossils will typically be destroyed
743029
Just have a look at the sites\nhttp://www.DNA-NEWS.ORG \nhttp://www.GENETIC.ORG.UK \nhttp://www.cell-stem.com\nhttp://www.dna-research.org\nhttp://www.dna-rna.org\nhttp://www.dnasequencing.info\nhttp://www.junk-dna.com\nhttp://www.testing-dna.org
1034393
The answer *appears* to be yes.  That is the current scientific theory of our origins.  There is no other *scientific* theory that explains what we see.  (I.e. 'something just created/designed everything' is a nice theory, but not a *scientific* theory as it is not testable, makes no predictions, and does not *explain* anything).\n\nAll the evidence points to the fact that every organism on the planet is a product of evolution from ancestral organisms.  This is not just fossil evidence, but genetic evidence linking humans to other apes (like chimps and gorillas), apes to other primates (like monkeys), primates to other mammals (like tigers and tree shrews), mammals to other vertebrates (like birds and salamanders), etc. etc. all the way back to single-celled organisms.  Every step has genetic links ... for example jellyfish are genetically linked to sponges, which have genetic links to amoebazoans, which have genetic links to early bacteria, etc.\n\nAnd the *amount* of genetic linkage can be computed based on the chemistry of a single molecule found in every organism on the planet ... a molecule called DNA.\n\nAnd the order of these genetic links all match up perfectly with order in which the ancestors for each organism appear in the fossil record (i.e. earlier genetic links appear in lower layers of rocks).\n\nAnd the *amount* of the molecular/genetic linkage all matches up with *when* each ancestor appears in the fossil record (i.e. the amount of molecular DNA difference expected based on known mutation rates, matches up perfectly with the ages of the rocks in which the fossils are found). \n\nThat is the evidence.  Those are *facts*.  Those facts are not in dispute, only the explanation for them.  If you can come up with a better *scientific* explanation for this all this evidence ... these observed *facts* ... then you would get the Nobel Prize.
1171167
Try this , it really helped me in my first few lectures in cell bio , such as DNA and RNA . Loads of animations and stuff ! \n\nhttp://www.johnkyrk.com/DNAtranscription.html
629727
make a model of DNA with wires and thermocole balls
573949
try wikipedia, search fossils
1075116
Structures resembling remarkably preserved bacterial and cyanobacterial microfossils from ~3,465-million-year-old Apex cherts of the Warrawoona Group in Western Australia currently provide the oldest morphological evidence for life on Earth and have been taken to support an early beginning for oxygen-producing photosynthesis. Eleven species of filamentous prokaryote, distinguished by shape and geometry, have been put forward as meeting the criteria required of authentic Archaean microfossils, and contrast with other microfossils dismissed as either unreliable or unreproducible. These structures are nearly a billion years older than putative cyanobacterial biomarkers, genomic arguments for cyanobacteria, and oxygenic atmosphere and any comparable diverse suite of microfossils. Here we report new research on the type and re-collected material, involving mapping, optical and electron microscopy, digital image analysis, micro-Raman spectroscopy and other geochemical techniques. We reinterpret the purported microfossil-like structure as secondary artefacts formed from amorphous graphite within multiple generations of metalliferous hydrothermal vein chert and volcanic glass. Although there is no support for primary biological morphology, a Fischer-Tropsch-type synthesis of carbon compounds and carbon isotopic fractionation is inferred for one of the oldest known hydrothermal systems on Earth.
25686
It is theoritically possible to clone a dinosur from its bones, however it would have to be recent bones to still have marrow cells in the, and since no dinosaurs have died recently then no, it is not practically possible. Plus, you would have to have a surrogate mother large enough to carry a dinosaur feutus to full term.
185951
The key problem in bacterial spores is lysis. You can use sonication (see 1st PubMed reference in Analytic Chemistry), followed by a standard DNA extraction protocol, which any molecular biology laboratory should be able to accomplish. (see 2nd website link)
792157
Paleontology is the study of fossils.
997393
hey check out this link,it will really help:\n\nhttp://www.extinctanimal.com/prehistoric.htm
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.
93891
The important thing is to keep the helical structure clearly visible. Don't worry about the side hydrogens or details of the molecules.\n\nKeep in mind that DNA is a double-stranded helix, and the strands don't revolve around each other identically. Which means there are two sizes of 'grooves': the small grooves are a bit over half the width of the large ones.\n\nIf you use styrofoam balls for the nucleotides and join them with drinking straws (a handy way to do this project), take care that the angle subtended by three of the balls be around 35 degrees.\n\nAbout 10 balls should complete a cycle, which means ball number 11 must be above ball number 1 in a straight line.\n\nDo a strand first, so that it looks fairly twisted yet linear. Add the other strand afterwards. A length of about 20 nucleotides per strand (= 40 in total = 40 small styrofoam balls) should be enough.\n\nGo to a crafts store and buy a bag of balls (they come in 50, 100, etc.) and a bag of 100 drinking straws. Color the balls blue for cytosine, red for thymine, green for guanine and orange for adenine. Pair orange with red and blue with green when building the second strand.\n\nHope this helps.
156825
Well, first I probably should know what a somer meteorite is, right? But you wanted answers, not more questions, right? Sorry, again. Okay, but be warned that a renowned physics professor at the University of Texas, a Dr. Steven Wienberg, I think (I hope!) it was, once reamarked about how remarkable it seems that our questions always honestly generate far more new questions than answers, so I'm not completely out of line, here, contrary to what may be quite conventionally viewed as popular opinion, especially in this context, i.e. an experimental situation, to wit; Yahoo! ANSWERS, a beta program.\nI believe Dr. Weinberg was involved somewhat in chaos theory, among other quite facinating things, I'm sure.\nIf memory serves me right, the term "carbonaceous" refers to, specifically, a geological era or period characteristic in reference to the more general use of the term as being rich in carbon, or consisting of carbon. Given carbon to be often associated with our familiar forms of DNA-based life, if it can be reasonably and plausibly demonstrated that any significant quantity or quality of carbon was introduced into the terrestrial environment via space, then this should prove to be interesting, at least, if not, indeed, rather provocative and even potentially quite instructive in terms of proper, universally themed deictic and didactic.\nSo, in my expert opinion, as the world's very first, ever, formal fact theorist, my best answer to your question is, "Good Question!"\nKeep up the good work, and keep excellent track of your sources, even though they shall invariably change with "progress" and "improvement" such as that so far demonstrated by several millennia of so-so documented record. (Everyone, especially the Catholic Church, for example, wants to rewrite history. Even the noble scientists pursuing "nothing but the truth", and so on in their quest to convert followers to their newest, "modern" religion, in theory AND practice, have been known to tamper with data for personal ambition, just a bit too frequently for comfort, among other things...)
266442
So far the DNA recovered from the best specimens has been too fragmented to successfully clone, but the Japanese have their sites on achieving that goal. Recent advances in reconstructing fragmented DNA have renewed interest in the task, and the techniques have been used to reconstruct mammoth DNA to a level that has allowed it to be compared to modern elephant DNA to determine that they are most closely related to Asian elephants. Many people, myself included want to see a mammoth cloned, and as technology improves it becomes more and more a possibility. As the arctic ice sheets melt and the permafrost thaws from global warming it becomes more likely that further well preserved mammoth bodies will be found in the future.
372921
http://faculty.clintoncc.suny.edu/faculty/Michael.Gregory/files/Bio%20101/Bio%20101%20Lectures/DNA/dna.htm
308642
http://biotech.biology.arizona.edu/labs/DNA_extraction_onion_studt.html\n\nhttp://www.miramar.sdccd.cc.ca.us/faculty/dtrubovi/micro/microhandouts/oniondna.pdf#search='DNA%20extraction%20in%20onion%20cells' \n\nhttp://www3.iptv.org/exploremore/ge/Teacher_Resources/teaching_materials/lesson1_onion.cfm\n\nhttp://www.nal.usda.gov/bic/Education_res/protocols/onion.extract.html\n\nhttp://www.sidwell.edu/us/science/vlb5/Labs/DNA_Extraction_Lab/dna_extraction_lab.html\n\nhttp://www.accessexcellence.org/AE/AEC/AEF/1994/dollard_onionDNA.html\n\nand on and on and on.  Just do a google search on your project.