Question

If 15% of a DNA sample is made up of thymine, T,what percentage of the sample is made up of cytosine, C?

A)15%
B)35%
C)70%
D)85%

Answer 1

If thymine makes up 15 percent of the bases in a certain DNA sample, what percentage of bases must be cytosine? If the DNA is double stranded, A = T and G = C. If T = 15%, then C = 35%.