DNA Structure
DNA is essentially a twisted ladder, composed of two strands (double stranded helix). Strands have a sugar phosphate backbone, attached to base pairs that hold the strands together.
Molecular structure
The four bases
Base pair ruling
These bases are complementary, meaning each base has its pair. In DNA, A always pairs with T, and C always pairs with G. These bases are connected via hydrogen bonds, with A and T forming two, and C and G forming three.
Adenine (A
Cytosine (C)
Guanine (G)
Thymine (T)
