a helix (like a spiral staircase).

Sequence

Although DNA and RNA do not generally occur in the same polynucleotide, the four species of nucleotides may occur in any order in the chain. The sequence of DNA or RNA species for a given polynucleotide is the main factor determining its function in a living organism or a scientific experiment.

Polynucleotides in organisms

Polynucleotides occur naturally in all living

1.Previous
3.Next