So this falsifies those charts which show Omicron originating from (Alpha) B.1.1.7 20B.

If I run a nucleotide by nucleotide most-like evaluation & then optimize a spanning tree from those relative 'alike' measures – the best solution which fits all the alike-strengths places Omicron before the B.1 sequence (Dec 24 2019).

Originally tweeted by Ethical Skeptic ☀ (@EthicalSkeptic) on December 6, 2021.

Originally tweeted by Ethical Skeptic ☀ (@EthicalSkeptic) on December 7, 2021.

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