The author has set assumptions about the structure of DNA that resembles a wire chain 2 stroke, rotate, and rotate to the right, the path that each spin around the same axis.
The authors have hypothesized about the structure of DNA that has a chain of two lines, spirals and spins to the right. Each of the lines that revolve around the same axis.
The authors have hypothesized about the structure of DNA that resembles a chain 2 lines. The spiral and rotate to the right. Each line that rotate around the same axis.