Question

In a sample of double-stranded DNA, 30% of the nitrogenous bases are adenine (A).

What percentage of the nitrogenous bases in the sample are thymine (T)?
Choose 1 answer:
A. 20%
B. 30%
C. 60%
D. 70%​

Answer 1

30% thymine

Step-by-step explanation:

If 30% of Adenine is present, it would be reasonable to assume that 30% of Thymine will be present, as the ratio between the two complementary nitrogenous bases will be roughly equal. Therefore, that leaves us with 40% between Cytosine and Guanine.