Question

Que fue primero, ¿La proteína o el ADN?

Answer 1

This question of biochemistry is just like the riddle "chicken or the egg". Genes present in DNA molecules codes for prodeins. Synthesis of proteins from DNA occurs via the process of transcription and translation. But the enzymes required for transcription or translation are proteins thus, this question is obvious. The right answer is DNA and RNA (nucleic acids). It is established from the research that some RNA molecules act as enzyme. Thus, for the first time of protein synthesis, RNA must have worked as enzyme.