g the genetic code is essentially the same for all organisms. from this, one can logically assume a. a gene from an organism could theoretically be expressed by any other organism and all organisms have a common ancestor--long ago--the same codons in different organisms usually translate into the same amino acids and rna was the first genetic material b. a gene from an organism could theoretically be expressed by any other organism and all organisms have a common ancestor--long ago--the same codons in different organisms usually translate into the same amino acids and dna was the first genetic material c. a gene from an organism could theoretically be expressed by any other organism since the control regions all respond to the same environmental stimulus