A SIMPLE KEY FOR CONTROLS AND VARIABLES UNVEILED

If two pyrimidines have been paired or two purines have been paired, The 2 pyrimidines would get up significantly less space than a purine plus a pyrimidine, and The 2 purines would get up more room, as illustrated in Figure \(\PageIndex seven \). If these pairings have been ever to arise, the structure of DNA could well be just like a staircase bu