- DNA is the genetic material found in the chromosomes in the nuclei of cells
- a chromosome consists of a string of genes
- a gene is a short piece of DNA that codes for a specific protien
- DNA is a long coiled molecule formed from two strands.
- the strands are twisted in a double helix
- the 2 strands of the double helix are joined by base pairs
- there are 4 different base pairs: A= adenine, T= thymine, C= cytosine and G= guanine
- DNA stands for deoxyribonucleic acid