Answer:
DNA typing by DNA sequencing using specific tools
Step-by-step explanation:
The DNA carries all the information of heredity of all living organism. In humans, DNA can be found in multiple cells that have a nucleus such as blood cells, saliva, sperm, etc. These are the target cells in forensic studies.
The DNA varies from person to person, making it unique (except for identical twins, the DNA are practically the same). This is because one chromosome of each pair comes from the mother and the other comes from the father and could have millions of combinations. Typing the DNA, we can know the variants in each person and match with a suspicious person’s fluids in a crime scene.