A Busy Life Is A Wasted Life.

Unfortunately It Makes The Unambiguous Determination Of Triplets By These Methods Much More Difficult Than Would Be The Case If There Were Only One Triplet For Each Amino Acid.

The Balance Of Evidence Both From The Cell-free System And From The Study Of Mutation, Suggests That This Does Not Occur At Random, And That Triplets Coding The Same Amino Acid May Well Be Rather Similar.

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The Meaning Of This Observation Is Unclear, But It Raises The Unfortunate Possibility Of Ambiguous Triplets; That Is, Triplets Which May Code More Than One Amino Acid. However One Would Certainly Expect Such Triplets To Be In A Minority.

It Now Seems Very Likely That Many Of The 64 Triplets, Possibly Most Of Them, May Code One Amino Acid Or Another, And That In General Several Distinct Triplets May Code One Amino Acid.