Chargaff's rule of DNA | Biology Guide
Chargaff's Rule Erwin Chargaff's proposed two rules which are known as chargaff rules. This role plays a key role in double helix structure discovery. Here the rules are : - Rule 1 - In DNA structure the total number of purines is equal to a total number of pyrimidine .,i.e., the number of guanine units is equal to the number of cytosine unit and the number of adenine units is equal to thymine units. Rule 2 - In every species there is a unique composition of DNA is present in its body. Hence , in double stranded structure of DNA A = T = 1 ...