Before the three-dimensional structure of dna was discovered, scientists knew that dna contained nitrogenous bases. the table below shows the percentages of the nitrogenous bases in a dna sample. which rule can be used to determine the percentages of the missing nitrogenous bases? complete the table and explain your answer.
base percent:
adenine 23
thymine
cytosine 27
guanine

Complementary base pairing rules

Thymine 23

Guanine 27

Explanation:

Complementary base pairing rules state that adenine always pairs with thymine, and cytosine always pairs with guanine in a double stranded DNA helix This means that in a double stranded DNA molecule, there will be exactly the same amount of thymine as adenine, and exactly the same amount of guanine as cytosine. Therefore, there is 23% of thymine, and 27% of guanine

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