Question

A dna molecule containing 32% thymine would contain how much cytosine?

Answer 1

18% because C pairs with G. A pairs with T. T and C are not complementary base pairs, but we do know that if a molecule consists of 32% T, it must have 32% A as well.

32 + 32 = 64

100 - 64 = 36

36 ÷ 2 = 18

There must be 18% of C.