I'm trying to find out who created or first used the codon wheel chart as far as we can know? (I don't mean the tabular format)

Codon Wheel

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    $\begingroup$ I have never heard of the codon wheel chart. Please provide some reference to it or post an image. Otherwise your question is likely to be deemed off-topic as unclear. (And you are unlikely to get an answer even if it isn’t .) $\endgroup$ – David Jan 20 at 19:49
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    $\begingroup$ Perhaps better asked on the History of Science & Math StackExchange. $\endgroup$ – mgkrebbs Jan 20 at 22:27

It is very difficult to answer this one for certain but I think the codon wheel representation is sometimes attributed to Rosemarie Swanson who represented the amino acid code using Gray code (or reflected binary code).

Swanson's work actually went quite a bit deeper than the simplified codon wheels you find in ordinary textbooks (ordering by size of the amino acid and position within the chain as well). You can have a look for yourself here in her 1984 article A unifying concept for the amino acid code in Bulletin of Mathematical Biology.

DISCLAIMER: I do not claim that I know the answer to this question for certain nor can I. However, I cannot find official publications earlier than Swanson's 1984 paper showing a circular representation of the amino acid code.

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    $\begingroup$ Even if she was not the originator, your answer takes this back far enough to deserve upvoting. $\endgroup$ – David Jan 21 at 22:06
  • $\begingroup$ Nice but as you say it still does not mean it is her idea. I wonder if she is still alive and can be asked $\endgroup$ – user3169260 Jan 22 at 10:36

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