Could you explain the structure of a DNA molecule?
A DNA molecule is made up of two strands of nucleotides that are twisted around each other. Each strand is composed of four different types of nucleotides, known as adenine, guanine, cytosine and thymine. The two strands are held together by hydrogen bonds between the bases on one strand with those on the other strand. These bonds allow the strands to twist around each other in a double helix formation. The two strands are then coiled around each other forming a double-stranded DNA molecule.