I am a nucleic acid.

I am usually single-stranded

I am generally found both inside and outside of the nucleus [in eukaryotic cells].

I am arranged as a double helix, and my shape is often described as a “twisted ladder.”

I include bases guanine, cytosine, and adenine.

I include the base uracil.

I include the base thymine.

I generally remain in the nucleus [in eukaryotic cells].

I have the sugar deoxyribose.

I am made up of nucleotides.