1. If a DNA strand has 33 % cytosine what percent will be adenine?
64 %
32 %
17 %
36 %


2. Which of the following combinations is true of the nucleotide composition of a sample of DNA?
A = C
A = G AND C = T
A + C = G + T
G + C = T + A

How do you know? Imagine guanine is 30% of the DNA sample. In your notebook, revise the mathematical model you chose in your answer now that you have this information.