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About the genetic code | About the genetic code | ||
"Two apparently opposed properties of living beings, stability and variability, are based on the very nature of the genetic text. The system only offers a choice between two alternatives. The only instruction that can be received from the environment through regulatory proteins is a ' go ' or ' stop ' signal. Reading the genetic message, therefore, is like getting music from a iuke-box in a cafe. By pressing one of the buttons, one can choose the desired record from those in the machine. But in no case can one modify the recorded music or its execution." | "Two apparently opposed properties of living beings, stability and variability, are based on the very nature of the genetic text. The system only offers a choice between two alternatives. The only instruction that can be received from the environment through regulatory proteins is a ' go ' or ' stop ' signal. Reading the genetic message, therefore, is like getting music from a iuke-box in a cafe. By pressing one of the buttons, one can choose the desired record from those in the machine. But in no case can one modify the recorded music or its execution." | ||
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