How many nitrogenous bases are there in DNA?

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Multiple Choice

How many nitrogenous bases are there in DNA?

Explanation:
There are four nitrogenous bases in DNA: adenine, thymine, cytosine, and guanine. These bases pair specifically (A with T, C with G) to form the rungs of the DNA double helix. Thymine is used in DNA, while RNA uses uracil instead of thymine, which can cause confusion if one assumes an extra base is present in DNA. So the correct count is four.

There are four nitrogenous bases in DNA: adenine, thymine, cytosine, and guanine. These bases pair specifically (A with T, C with G) to form the rungs of the DNA double helix. Thymine is used in DNA, while RNA uses uracil instead of thymine, which can cause confusion if one assumes an extra base is present in DNA. So the correct count is four.

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