How is hair used for DNA testing?

Answer by  LaneyRae (115)

Hair, skin, blood, bone, and saliva all contain DNA. Each person has a unique genetic pattern. If the DNA sequence from a hair found at a crime scene matches that of a suspect, it's good evidence to be used against them as it shows they were most likely at the scene of the crime.

Answer by  unkanny (16)

Although hair doesn't contain DNA, the base of a strand of hair has living cells that can be used for DNA comparisons. There are many methods of DNA comparison that can be used depending on what you are trying to find out. it is usually common for a swap of cheek tissue to be used for DNA tests.