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Because those personal bodily samples (among others) contain samples of the cell structure call DNA which is unique to every person on earth. The statistical odds of two people having the exact same DNA (EVEN identical twins) is so astronomical as to be insignificant.

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14y ago

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Related Questions

What are different types of forensic evidence?

Blood Semen Urine DNA Hair Fingerprints Bones Bitemarks


What are the factors that differentiate any two humans like fingerprints and DNA?

Personality, eye colour, parent dna, blood type, hair coulour, hair type, pueberty cycle, and growth rates.


How do DNA fingerprints help the police?

DNA fingerprints help police by providing a unique genetic profile for each individual. This information can be used to link a suspect to a crime scene or eliminate innocent individuals from suspicion. DNA fingerprints are highly accurate and can be crucial evidence in solving crimes.


How could DNA fingerprints help find out who the burglar is?

It can help people who are looking for the person find them by taking the fingerprints to the police. =)


Do fingerprints provide DNA?

Fingerprints do not provide DNA themselves. It is the DNA that creates the contours of your fingerprints, so rather than providing the DNA fingerprints merely support it. Therefore, if DNA is already available it can easily be linked to fingerprints.


How is science used in crime scene investigation?

DNA technology allows you to scan DNA, such as fingerprints or hair or blood, and it gives you matches of people that could be the suspect.


If police find a gun and find finger prints on it can they charge the person with their prints on it?

no they find the DNA from the fingerprints and the look on the computer then the person who made the fingerprints his/her face will come on to the computer


Why hair is considered to be circumstantial evidence and not as positive a means of identifying a suspect as fingerprints are?

Hair does not have unique characteristics like fingerprints do. While it can provide important information such as DNA analysis, hair evidence alone is not as definitive for identification purposes because multiple individuals can have similar hair characteristics.


Do fingerprints contain DNA?

No it does not. However, if there was blood, saliva, or sweat on the finger that made the print, it would theoretically be possible to collect the material and extract dna from it.


What evidence do forensic scientists need?

Blood slatters so they can tell how far it slpattered from and fingerprints and DNA of the person


What are some ways you could be identified through forensic science?

Fingerprints. Blood group. DNA Fibre analysis.


Who has DNA fingerprints that are similar to your DNA fingerprints?

No two individuals (except identical twins) have the same DNA fingerprints, as they are unique to each person. DNA fingerprints are also known as DNA profiles and are widely used in forensics and paternity testing because of their individuality.