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For a couple of decades, biologists knew the nucleus contained DNA and proteins. The prevailing opinion was that the genetic material was proteins, and not DNA. The reason for this belief was that proteins are more complex than DNA. This is becausea.proteins have a greater variety of three-dimensional forms than does DNAb.proteins have two different levels of structural organization; DNA has fourc.proteins are made of 20 amino acids and DNA is made of four nucleotidesd.Only A and C are correcte.A, B, and C are correct

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