We can confirm that DNA can be used to tell people apart due to the exact DNA sequences of each individual.
What are DNA sequences?
DNA is made up of nucleic bases. These bases include:
- Adenine
- cytosine
- guanine
- thymine
in human DNA. The order of these bases will determine the sequence of the DNA strand. Due to the incredibly high number of bases each organism produces, it is virtually impossible for two people to have the exact same DNA sequence.
Therefore, due to the large amount of DNA bases, each sequence is unique to the person and therefore can be used to tell people apart.
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