👉 The term "polynucleal" is a term used in molecular biology to refer to nucleic acids (DNA and RNA) as they are composed of DNA and RNA molecules. These molecules consist of two types of nucleotides, namely adenine (A), thymine (T), guanine (G), and cytosine (C). Nucleotide base pairs are linked by a hydrogen bond between the two strands of the molecule, which is known as the double helix structure