Where Is DNA Contained in the Human Body?
DNA is contained in blood, semen, skin cells, tissue, organs, muscle, brain cells, bone, teeth, hair, saliva, mucus, perspiration, fingernails, urine, feces, etc. DNA is really a code, divided up into sections. Dr Matthew Hodgkin, a Research Fellow at Birmingham University’s Institute of Cancer Studies explains: “You may have heard the term ‘double helix’. This describes the DNA molecule. It is two strands coiled round each other. You inherit half your DNA from your mother and half from your father. The genes are all in pairs and which of each pair you inherit from each parent is randomly determined when the egg or sperm cells are developing. This explains why an inherited disease caused by one gene will only be passed on to children in 50% of cases.” How DNA Profiling Helps to Solve Crimes DNA profiling or fingerprinting was developed in 1984 by British geneticist Sir Alec Jeffreys and first used in forensic science to convict Colin Pitchfork in the 1988 Enderby murders case. A DNA fi
