Every time I would say, but often is the answer as theory should be revised, and also done practically so that you don’t forget the concepts
The answer to this question is "repairing old appliances"
Answer:
A.30
Explanation:
According to Chargaff's rule there is the same number of Thymine bases as there are of adenine
so we have 120 adenine and 120 thymine
300-120-120=60
those 60 base pairs are represented by cytosine and guanine which also pair with each other according to chargaff's rule they're equal in number
60/2=30 guanine bases
