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DNA Testing Breaks Down Barriers in the Court Room
DNA testing has three major applications for forensic studies: identification of missing persons; identification of victims of wars, accidents, and natural disasters; and crime investigation. Annually, more than 20,000 forensic DNA tests are performed in the UK. Two out of three of all criminal cases using DNA evidence involve sexual assault, the rest are cases dealing with burglary, murder, and other types of violent crime. During the last 15 years, DNA analysis became an indispensable police tool in fighting crime because it allows unambiguous identification of the criminal by traces of biological material left at the crime scene. It can also acquit innocent suspects based on DNA evidence. Criminal justice system now relies heavily on DNA-based evidence. Since it was first used in the Enderby murder case (1986), thousands of perpetrators has been convicted of various crimes with the help of DNA evidence, and hundreds wrongfully convicted people have been exonerated. The most common samples collected at the crime scene are blood, semen, and saliva; virtually any biological material or objects handled by a perpetrator can be now used for forensic DNA testing. Clothing, furniture, and other items which may have traces of DNA, are now routinely used for obtaining DNA evidence. The technology is so sensitive that it allows identification of a person by analysing DNA collected from a fingerprint left on the surface of an object or from a single hair left at a crime scene. When a crime scene sample or a sample from a suspect is analysed, a DNA profile is produced. A DNA profile is a digitalised representation of an individual's genotype with respect to the DNA markers tested. In the UK, all crime scene DNA profiles together with those of all suspects and arrestees for any recordable offence are deposited into a National DNA Database (NDNAD), which is the world's first criminal DNA database. As of 2004, the UK national DNA database held over two and a half million DNA profiles collected from suspects and convicted criminals which is estimated to be about 40% of UK criminally active population as well as more than 200,000 crime scene samples. UK Police use the NDNAD as an investigative tool to help solving a wide range of crimes including murder, rape, sexual assault, robbery, terrorism, burglary and arson and have almost doubled their clearance rate for volume crimes such as house burglary, and motor vehicle offences. As each new subject sample profile is added to the database, it is checked against all contained crime scene sample. When a new crime scene sample profile is added, it is checked against DNA profiles of all suspected individuals as well as against other crime scene sample records. Since its inception in 1995, the NDNAD had matched more than 200,000 crime scene samples to suspects and more than 20,000 crime scene samples to other crime scenes. Every week more than 300 crime scene samples are matched to the suspect and convicted criminal's database. However, a DNA match between a suspect and a crime scene does not automatically guarantee a conviction. DNA evidence is just another piece of evidence, although very strong one, and on its own is often not enough to convict someone of a particular crime. DNA evidence must always be taken in conjunction with other pieces of evidence and the weight of DNA evidence is impossible to estimate without taking into account the circumstances of the case. Even when a strong match between a defendant and a crime scene sample is presented by the prosecution, non-DNA evidence may be pointed to someone else as the real perpetrator of the crime. This "other" evidence can decrease the weight of DNA evidence and increase the chances of successful defence. The discovery of www.dna-bioscience.co.uk/glossary/genetic-fingerprinting.shtml">DNA fingerprinting 20 years ago had revolutionised the legal profession. Criminal and non-criminal justice systems were handed a very powerful tool to solve crime and resolve civil cases. Understanding how DNA testing can be applied in legal profession will bring benefits to both lawyers and their clients. Avi comes from an international business background with Citibank where he specialised in managing projects in London, Europe, South America and Asia Pacific. In 2004 he was awarded the prestigious Shell Live Wire Entrepreneur of the Year award for his business. Working closely with the charities and various media outlets Avi strives to increase public awareness as to the benefits of www.dna-bioscience.co.uk">DNA testing and the continuing impact that technological advances will have on all our lives. Learn more about DNA testing or how you can receive your own free home DNA www.dna-bioscience.co.uk/service_paternity_test.shtml">paternity testing kit.
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Preventing Flooding on Individual Farmers Fields to Save Crops
I propose permits be given to farmers to they can set up along the edge of their fields a microwave array to burn a hole in the clouds when severe weather threatens their crops. I would propose that this concept be completely privately funded and be done in conjunction with the FAA.
Secrets of The Mathematical Symmetry of Nature and Patterns of Erosion
As scientists and theorists study patterns, design, chaos, complexity they often turn to nature for examples and there is plenty of examples in nature too. The stripes on a zebra, patterns on a butterfly, spider webs, leafs on a tree, scales on a fish, seashells, brain waves, muscle structure, texture of granite, spider webs, Earth cycles, waves on the ocean, wind flow, clouds in the sky, Rainbows, Solar System, structure of a meteorite and even DNA itself.
Aerodynamics of a Flying Disk or Flying Sphere
Aerodynamics of a flying sphere. It has been said that in the future we maybe flying around anti-gravity type spheres, but this does not mean it will not have to deal with relative wind in our own atmosphere.
How A Light Bulb Works and Other Interesting Tidbits
Light Bulb ScienceEver wonder how a light bulb works? I mean it seems easy, you flick a switch and "bam" there is light! While not much more complicated than that, there is a little science involved.To understand how a light works you need to understand certain terms including voltage, watt and amperage.
Earthquakes, Tsunamis, Mudslides: Extreme Events - What Do They Mean?
In lieu of recent, tumultuous occurrences, people are more compelled than ever to discover the mystery of these modern-day, earth-changing events.One day, Earth(1) is experiencing the fourth largest earthquake in a century - a 9.
Telescopes - Principle of Operation and Factors that Affect Its Properties
Telescopes are devices that are used to view the distant objects. They find its use in astronomy and physics.
Electromagnetic Energy in Space
Tesla was always looking for a way to harvest electromagnetic energy and deliver it to the world wireless, after reading a biography about Tesla, I had come up with this concept.Why not put a satellite that counter rotates the Earth and is located at the poles.
Is Thought Evident in Plants?
Who would have thought that a plant could be a witness to a crime - and even testify against the perpetrator? Well, it is true! In the early 1970's experiments were done on ordinary houseplants, by researchers who connected a polygraph machine to a plant.An interesting thing happened - the researchers discovered that their plants actually recognized their owners, they responded to being talked to and praised, and they also fainted when exposed to negative thoughts or words, or violence directed at them.
Ground Targets Via Space Laser Weapons
It is now possible to overwhelm our enemy from space or near space (ultra high-altitude) Blimp weapons. Right now we watch as 11 Western States have massive wild fires, most caused by lightning, but they could just as easily be caused by laser weaponry.
Equipment for the Amateur Astronomer - Part 1
Binoculars and telescopes and other astronomy equipment and accessories are the meat and potatoes of amateur astronomy. A good pair of binoculars is what introduced me to the pleasures of stargazing many moons ago and only after a couple of years scanning the skies did I graduate to a telescope.
Cloaking the Postage Stamp Modern Aircraft Carrier
By using a special coating on the deck of an aircraft carrier and a projector on the top of the tallest communications mast facing down, we could project the image of the ocean onto the deck like a giant IMAX theatre screen. Although this sounds like a daunting task, it isn't really.
How Can DNA Testing Help an Immigration Case?
DNA testing is routinely used in immigration cases to prove whether a child under 18 is a biological child of or, in some cases, is related to an individual with a leave to remain in the UK. Most DNA tests for immigration reasons are parentage testing (paternity or maternity) but in some cases a grand parentage or avuncular (whether a child is a nephew or a niece of the sponsor) test is employed to prove an alleged relationship.
N400 Brain Wave to Assist in Learning and in Performance
In any important task you need to stay alert and in some professions someone could lose their life ifyou are not staying heads up or cause a serious accident where someone else has to pay with theirs. Not good, so what is the solution here? Here is a thought on learning, safety, brain waves and winning.
Weather Control and Creation to Use as a Screen for Troop Advancement
Creating a Hurricane using a Space based laser array to heat up surface waters when conditions are right. By using a tropical storm system and super heating the water in the path and then in a counter clock wise direction if in the Northern Hemisphere or Clock-wise if in the Southern Hemisphere because;"A hurricane is an immense circulating storm, an intense case of a class of weather systems called tropical cyclones.
Einstein Half Dead
100 years ago Albert Einstein developed his Relativity Theory of physics that claimed that the universe is actually based on a space-time-gravity continuum (a non-mechanical version of Rene Descartes' earlier mechanical ether theory) and with time as variable and relative.Einstein believed that his theory disproved "all of Isaac Newton's physics theory", and that "Newton's theory" had disproved all earlier physics theories.
Mini Robots Grid Meteorite Search
We need very much to study meteorites more, but we need more sampling to get this done. One way to do this is to go out hunting for meteorites.
Astrophysics and Other Universe Sentient Life
ASTROPHYSICS: - Many other entries will deal with knowledge from this truly amazing field of exploration founded in astrology and chaos science before the Ice Age. There is one question we'd like you to consider at this time.
A Call for a Worldwide Campaign on Water Conservation
If we are to tackle the challenges of future populations on the planet, we will need to insure adequate water supply. Our US population is growing, by one person every nine seconds and with this growth the consumption of fresh water increases.
UAV Air-Breathing SAM Upgrade Recommendations
Can a hybrid Surface to Air Missile, UAV loiter for hours and then become a missile to down an enemy aircraft?Small UAV surface to air missile (SAM), which is air-breathing is a good idea and yields many possibilities to the future of air combat.http://www.
The Fertilization Process and Implications of Test Tube Babies
Through the wonders of science, infertile couples who were previously unable to bear children, due to reasons such as blocked fallopian tubes, low sperm count, low egg quantities or advanced age of the mother, are now able to conceive through in-vitro fertilization. The results are babies known as test-tube babies which are technically conceived outside the womb.