i wanna know about molecular biological technique to detect DNA from any biological sample?
104426
DNA is a good source of evidence for forensic experts, for doctors to identify cancer, recently used for SARS detection, to name a few .\n\nThere are techniques which are used to detect the presence of a specific sequence in a given DNA sample. PCR  or Polymerase Chain Reaction is one of them. here we amplyfy a specific sequence of DNA of interest. if the biological sample contains that DNA sequence then its amplified and can be visualized on a electrophoretic gel. DNA being negativey charged runs on an agorose gel under electric current towards the positive electrode and gets separated based on the size...slower the movement the bulkier the fragment. \n\nforensic experts use this to match DNA samples from site of crime to the suspect. this can also be used in case of paternity disputes, to detect the predisposition of a person to cancer etc etc.\n\nthere are many more techniques which you can search
1151978
Try this\nhttp://www.globalonlinesvcs.com/DNA_Testing.html
1047973
The use of computers to handle biological information. The term is often used to describe computational molecular biology – the use of computers to store, search and characterize the genetic code of genes, the proteins linked to each gene and their associated functions.
491229
C)gel electrophoresis. \nIn gene splicing ther's cutting of DNA At specific regions. DNA Cloning involves the magnification or production of identical copies of DNA
566382
try this \n\nhttp://en.wikipedia.org/wiki/DNA_fingerprinting
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
953794
Simply DNA is an organic computer program which contains all of the information to grow an organic creature, such as mice, worms and humans.\n\nDNA is all but as individual as you are, so DNA can be used by forensic scientists to narrow down the search for the perp in a murder enquiry.\n\nDNA (if read) can provide much information:\n\napproximate height, hair colour, ethnicity, eye colour, approximate age, etc...
762553
gene is the DNA or RNA in animals cell
625549
looking for relatives via DNA
689685
One really easy answer is DNA sequencing. Nanotechnology deals with objects measured in the billionths of a meter. Most say objects less than 100 nanometers. Therefore, although the length of a DNA Strand is way to long to be considered Nanotechnology the individual base pairs fit into nanotechnology perfectly.
116081
OK.  I've searched all of my micro stuff and I can't find mention of a PCR anywhere.  You'd figure someone who could answer this question would know what a PCR was, but not this someone.\n\nAll I can say is that for years people relied on bacterial morphology (Spherical, Rods, Curved, Clusters, Chains, etc. . .), grams stain characteristics (+ or -), colony morphology, atmospheric growing conditions (O2, no O2, increased CO2), nutritional requirements, and biochemical tests (Peroxidase, Indole, Oxidase) to differentiate different species of bacteria from each other.\n\nI hope this is what you're looking for.
1003762
Hi.  I am a scientist who works in the pharmaceutical/biotech industry.  In my field, we do a wide variety of things:\n\nIn terms of cell-based drug discovery assays, we can take cells from a person, grow them in petri dishes and test new drugs that we've developed on them to see if the cells live or die in response to the drug. (Of course, this is in very VERY general terms; it's much more complicated than that).  If we want to test a variety of cell types against a variety of chemical compounds, we can use automated technology called High Throughput Screening... In HTS, very sophotisticated robots carry out 96 or 384 experiments at a time.   \n\nMolecular biologists can change cells by adding viruses or DNA plasmids and allowing the virus or plasmid to assimilate itself into the host cells's normal DNA.  This process is called transfection.  This is useful if you want to overexpress a gene or condition that you want to study or model/test a drug against.  Molecular biologists can also clone these plasmids and grow more of them for large-scale experiments.  Two other common techniques that molecular biologists use are PCR (in which we can look at an organism's  genes) and Western Blots (that allows us to look at certain proteins that are produced / expressed within cells).\n\nHistologists can take tissues and use immunohistochemistry (IHC) to detect the presence of certain proteins or other characteristics of the cells.  In IHC, antibodies which targe a certain cellular protein are applied to a preserved tissue and that antibody can then be detected by fluorescence or an enzyme-based coloration process.  \n\nThese are just a few of the techniques that we use to develop new drug therapeutics.  Be aware that the process to develop one drug from start to finish takes about 15-20 years and about $1billion, which might give you an idea of exactly how complicated it can get once you get into detail on the topic.
597016
Uses of DNA Fingerprints\n^^^^ ^^ ^^^ ^^^^^^^^^^^^\nDNA fingerprints are useful in several areas of society. They are used by professionals in human health and the justice system. \n\n-Diagnosis of inherited disorders \n\nDNA fingerprinting is used to diagnose inherited disorders in both prenatal and newborn babies in hospitals around the world. These disorders may include cystic fibrosis, hemophilia, Huntington's disease, familial Alzheimer's, sickle cell anemia, thalassemia, and many others. \n\nEarly detection of such disorders enables the medical staff to prepare themselves and the parents for proper treatment of the child. In some programs, genetic counselors use DNA fingerprint information to help prospective parents understand the risk of having an affected child. In other programs, prospective parents use DNA fingerprint information in their decisions concerning affected pregnancies. \n\n-Developing cures for inherited disorders \n\nResearch programs to locate inherited disorders on the chromosomes depend on the information contained in DNA fingerprints. By studying the DNA fingerprints of relatives who have a history of some particular disorder, or by comparing large groups of people with and without the disorder, it is possible to identify DNA patterns associated with the disease in question. This work is a necessary first step in designing an eventual genetic cure for these disorders. \n\n-Biological Evidence \n\nFBI and police labs around the U.S. have begun to use DNA fingerprints to link suspects to biological evidence -- blood or semen stains, hair, or items of clothing -- found at the scene of a crime. Since 1987, more than 150 cases have been decided with the assistance of DNA fingerprint evidence. \n\nAnother important use of DNA fingerprints in the court system is to establish paternity in custody and child support litigation. In these applications, DNA fingerprints bring an unprecedented, nearly perfect accuracy to the determination. \n\n-Personal identification \n\nBecause every organ or tissue of an individual contains the same DNA fingerprint, the U.S. armed services have just begun a program to collect DNA fingerprints from all personnel for use later, in case they are needed to identify casualties or persons missing in action. The DNA method will be far superior to the dogtags, dental records, and blood typing strategies currently in use.
850952
http://www.bbc.co.uk/dna/h2g2/A1087193\n\n\nthis should answer all your questions, hope it helps
276127
any biological item has DNA,hair,saliva,blood- doesnt take much to capture a dna sample
509034
www.dnaftb.org\nhttp://www.dnai.org/\n\nHope u like my answer
925112
(m)\n\nBioinformatics is the application of computer technology to the management of biological information. Computers are used to gather, store, analyze and integrate biological and genetic information which can then be applied to gene-based drug discovery and development. The need for Bioinformatics capabilities has been precipitated by the explosion of publicly available genomic information resulting from the Human Genome Project. The goal of this project - determination of the sequence of the entire human genome (approximately three billion base pairs) - will be reached by the year 2002. The science of Bioinformatics, which is the melding of molecular biology with computer science, is essential to the use of genomic information in understanding human diseases and in the identification of new molecular targets for drug discovery. In recognition of this, many universities, government institutions and pharmaceutical firms have formed bioinformatics groups, consisting of computational biologists and bioinformatics computer scientists. Such groups will be key to unraveling the mass of information generated by large scale sequencing efforts underway in laboratories around the world.