Question

Why the molecule has the same amount of purines and pyrimidines

Answer 1

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Because hydrogen bonds are not as strong as covalent bonds, base pairings can easily be separated, allowing for replication and transcription. Because purines always bind with pyrimidines – known as complementary pairing – the ratio of the two will always be constant within a DNA molecule......♥

Answer 2

ANSWER WITH QUALITY

A purine-being adenine and guanine-always bonds with a pyrimidine-being cytosine and thymine/uracil-because that is the only way that the structure of the DNA stand, a double helix, can be supported.

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