What did chargaff discover while studying bases in the dna of organisms? the bases in the dna of each organism were unique. the ratios of thymine and adenine were similar, as were the ratios of guanine and cytosine. the overall percentages of bases were different from one organism to the next. there were equal amounts of all four bases in every organism, or 25 percent of each base

Chargaff discovered two things
1. The amount of T is always equal to A and the amount of G nucleotide is always equal to C
2. The amount of A, T, G, C varies from organism to organism and from one species to another
The correct answer is therefore the ratios of thymine and adenine were similar, as were the ratios of guanine and cytosine.

Not only did he not discover the remaining, but they are incorrect and can thus not be discovered.