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Why was it difficult to use DNA as evidence in a crime pcr was invented?
Wiki User
∙ 7y ago
you need many copies of DNA for DNA fingerprinting
Ellen Funk
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How do they use DNA evidence today?
Police use DNA evidence to run tests and find out who committed a crime.
Why is DNA evidence difficult to refute in court?
No two individuals, other than identical twins, have the same DNA.
Are there any downsides to DNA evidence?
There are a few downsides to DNA evidence: It has been suggested that the prominence of DNA evidence on TV shows has caused juries to expect irrefutable DNA evidence before convicting someone. This may be a problem if other forms of evidence are ignored. DNA evidence can only be obtained in instances where biological substances are left behind or exchanged. This only occurs in a minority of cases. DNA evidence sometimes only proves that the person was present at the scene - it does not always prove guilt. However, if a person's DNA is found at the scene, this may be perceived as proof that they committed the crime.
Who invented DNA fingerprints?
Fingerprint evidence and DNA evidence have NOTHING to do with one another except the fact that they are both collected by a crime scene technician. Fingerprints are the recoverable oily residue left by the pads of your fingers. DNA evidence is concerned with bodily fluids and the unique chemical/biological makeup of them that is unique to all individuals. The only similarity between these two concepts is that both fingerprints and DNA are totally unique to each individual and are, therefore 100% accurate in identifying people.
Can DNA on a cigarette at the crime scene of a robbery be enough to convict someone?
Not necessarily. It would depend on how much other evidence there is. By itself, DNA on a cigarette only proves that the suspect was physically present at the scene of the crime. It proves he was there at some unknown time, but it does not prove that he was there during the commission of the crime or that he committed the crime. It is a compelling piece of evidence, but it would need to be accompanied by other evidence, in order to ensure a conviction. For example, if eyewitnesses saw the suspect's car fleeing the scene, and if bullets matching those used in the crime were found at the suspect's home, THAT, combined with the DNA on the cigarette, would probably be enough to convict.
Why was it difficult to used DNA as evidence in a crime before PCR was invented?
you need many copies of DNA for DNA fingerprinting
Why was it difficult to use DNA as evidence in a crime before PCR was invented?
you need many copies of DNA for DNA fingerprinting
Why was it difficult to use DNA as evidence in a crime before PCR was inventes?
you need many copies of DNA for DNA fingerprinting
Crime scene hair is what type of evidence?
DNA
What evidence can be used for DNA fingerprinting at a crime scene?
Vagina
How do they use DNA evidence today?
Police use DNA evidence to run tests and find out who committed a crime.
Why is DNA evidence difficult to refute in court?
No two individuals, other than identical twins, have the same DNA.
How is DNA use as Evidence?
They compare the DNA of those found at the scene of the crime against any suspect. This can be achieved by using Electrophoresis.
What commission was formed in 1998 to ensure the effective use of DNA as a crime fighting tool?
National Commission on the Future of DNA Evidence
Why is blood evidence important?
Blood evidence can help to identify the suspect who comitted the crime, (especially in regard to their unique DNA which is found in the blood).
How DNA use in real life?
DNA has many uses in real life. These uses may include use as evidence in a crime scene for example
What should police officers know about DNA testing?
All police officers are trained in the preservation of evidence at a crime scene, but unless they are specifically trained as crime scene or evidence technicians the average police officer is merely aware of DNA testing, not any specifics as to how it is conducted.
