A DNA example is a specific sequence of the four nucleotide bases: adenine (A), thymine (T), guanine (G), and cytosine (C). These sequences provide instructions for building and maintaining an organism. For instance, a sequence of ATTTTG might instruct for blue eyes, while a sequence of TTTTTG might instruct for brown eyes.
DNA is unique to every individual, with the exception of identical twins. This uniqueness is why DNA evidence is so powerful in solving crimes.
For example, DNA samples from a crime scene can be compared to a suspect's DNA profile to determine if the suspect was present at the crime scene. DNA can also be used to link different crime scenes together, demonstrating a connection between different offenses.
In addition to the examples mentioned above, DNA can be used for the following:
- Paternity testing: To establish biological relationships.
- Genetic testing: To screen for certain diseases and conditions.
- Forensic science: To identify individuals and solve crimes.
- Genealogy research: To trace family lineages and identify relatives.
