There is 17% A in a DNA molecule. How many other nucleotides are there in this molecule.

DNA structure consists of 4 types of nucleotides:

A – Adenine

G – Guanine

T – Thiamine

C-Cysteine

Chargaff’s rule: A = T, G = C.

And together nucleotides (A + G + C + T) = 100%.

It follows from this that T = 17%. (since A = 17%)

C + G = 100- (17 * 2) = 66 (%).

C = G = 33%.

Conclusion: in the DNA molecule there are 17% adenine and thiamine nitrogenous bases and 33% cysteine and guanine bases.