Root of the hair containing protoplasm
DNA evidence can take on many forms, but commonly is either hair, skin, saliva, blood, or semen. Find a non-violent way to collect one of these in a decent amount, and there you go.
Do you think DNA fingerprinting is good evidence for solving crimes. why or why not?Do you think DNA fingerprinting is good evidence for solving crimes. why or why not?
The follicle of a human hair contains both DNA and RNA. The shaft of a hair contains only mitochondrial DNA.
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.
Evidence doesn't "expire". As long as the sample is in suitable condition to allow analysis, it can be used forever.
Hair can be used for a DNA profile.
DNA
hair follicle
We cannot identify a person specifically with hair alone. Even if their is mtDNA, it isn't good enough-DNA is class evidence anyway.
Hair containes DNA evidence and can also be tested for drug usage.
Blood Semen Urine DNA Hair Fingerprints Bones Bitemarks
DNA evidence can take on many forms, but commonly is either hair, skin, saliva, blood, or semen. Find a non-violent way to collect one of these in a decent amount, and there you go.
It is part of your DNA and you got it from one or both parents.
DNA can be found on any part of the body. My best bet would be to get a piece of hair.
There are a few types of DNA. Some of them such as blood can be washed away. This is why its important that if someone is attacked they should go to the hospital before taking a shower. Some such as the DNA in your hair cannot be washed away.
There are many arguments for and against DNA evidence. One argument is that it cannot be disproved as deciding evidence.
Hairs can be used to detect DNA of the killer or to identify the victim. Hairs can also be tested for poison.