Minakadi,  akéhnyané untaian ring tulang tundu heliks (Crick narka 2 untaian, sakéwanten nguningayang ring Watson mangda nyelehin malih mangda sayan jenar), genah pasangan basa (ring tengahing tulang tundu utawi ring sisi  tulang tundun), miwah sané tiosan.
For example, the number of strands in the backbone of the helix (Crick suspected 2 strands, but cautioned Watson to examine that more critically), the location of the base pairs (inside the backbone or outside the backbone), etc.