DNA structure

DNA is the molecule that holds the instructions for growth and development in every living thing. Its structure is described as a double-stranded helix held together by complementary base pairs.

DNA as a double stranded helix held together by complementary base pairs.

The basic units of DNA are nucleotides. These nucleotides consist of a deoxyribose sugar, phosphate and base.

A nucleotide consisting of a deoxyribose sugar, phosphate and base