Explain chargaff’s rule for base- pairing ( pls help due right now lol ) ( ◠‿◠ )

Chargaff's rules state that DNA from any species of any organism should have a 1:1 stoichiometric ratio (base pair rule) of purine and pyrimidine bases (i.e., A+G=T+C) and, more specifically, that the amount of guanine should be equal to cytosine and the amount of adenine should be equal to thymine.

Sorry for the late answer, but I hope this helps! `(*>﹏<*)′

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Chargaffの規則では、あらゆる生物のあらゆる種のDNAは、プリンとピリミジンの塩基の化学量論比（塩基対の法則）が1：1（つまり、A + G = T + C）である必要があり、より具体的には、グアニンの量がシトシンと等しく、アデニンの量はチミンと等しくなければなりません。

回答が遅れて申し訳ありませんが、これがお役に立てば幸いです。`(*>﹏<*)′

i believe it is "they are not used up by reactions" as the answer to your question, text me back if this is correct because i just learned this.

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