DNA & You
You are made up of cells. Cells know what to do because of the DNA, your body’s instruction book, inside each cell. Humans have 23 chromosome pairs – one of each pair contains genetic information from your biological mother, the other from your biological father.
The instructions within sections of the DNA – called genes – build, maintain and regulate your body’s functions. The differences that each of us have in the structure of our genes are called variation, or mutations. This variation makes each of us unique.
Thousands of genes are organized and packaged into units called chromosomes.