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Deoxyribonucleic acid (DNA) is the carrier of genetic information, including for all known living organisms. The only known exceptions are RNA viruses.

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What happens to the complementary base when the other undergoes a base substitution mutation?

So if a base substitution mutation occurs, say an A is replaced by a C on the strand, does it affect only one of the strands on the DNA or does it changes the base pair entirely? Thanks. …
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