We leave fingerprints on everything we hold and touch because of tiny sweat glands that secrete oils and salt from our fingers.
Fingerprints can be used as a unique 'password' to gain access to high-security places.
DNA stands for deoxyribonucleic acid
DNA is a code divided into sections called genes, which contain all the information that creates our bodies, including the colour or our hair and eyes.
Each cell in your body contains 23 pairs of chromosomes. In each pair, one chromosome is inherited from your mother, and one is from your father.
Top
Cookie information
Cookie Notice
We use cookies to track usage and improve the website.