Assertion: purine | /r/HasProperty | large
Facets:
value: excessively
type: DEGREE
Source sentences:
text: If the two sugar-phosphate backbones in double-stranded DNA are to remain the same distance apart, which they must if the helix is to be stable, then two purines bonded together would be excessively large, while two bonded pyrimidines would be excessively small.