Assertion: dna | /r/AtLocation | the shape of a double helix
Facets:
value: naturally
type: MANNER
Source sentences:
text: Critically, these researchers did in fact establish that DNA exists in three-dimensional form in the shape of a double helix, which is essentially a ladder twisted in different directions at both ends to create a spiral shape.
text: DNA is a chemical chain that exists in the shape of a double helix.
text: DNA is a chemical chain that naturally exists in the shape of a double helix.