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Thus, the high-affinity binding of the SARS-CoV-2 spike protein to human ACE2 is most likely the result of natural selection on a human or human-like ACE2 that permits another optimal binding solution to arise. This is strong evidence that SARS-CoV-2 is not the product of purposeful manipulation.
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Instead, we propose two scenarios that can plausibly explain the origin of SARS-CoV-2: (i) natural selection in an animal host before zoonotic transfer; and (ii) natural selection in humans following zoonotic transfer.
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This clearly shows that the SARS-CoV-2 spike protein optimized for binding to human-like ACE2 is the result of natural selection.
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Mutations, insertions and deletions can occur near the S1–S2 junction of coronaviruses22, which shows that the polybasic cleavage site can arise by a natural evolutionary process.
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For example, a future observation of an intermediate or fully formed polybasic cleavage site in a SARS-CoV-2-like virus from animals would lend even further support to the natural-selection hypotheses.
originally posted by: hopenotfeariswhatweneed
a reply to: Zanti Misfit
That's so tacky....
COVID19 came from SARS
It was engineered from it, it is SARS 2...
Telling me that it comes from animals lol no kidding Ray...
And I’m not talking out my ass Ray nor am I showing mine like you are...
originally posted by: Sillyolme
a weapon would target the warriors and the strong. This one takes the retired and the ill.
It's not a weapon but
originally posted by: Snarl
originally posted by: Sillyolme
a weapon would target the warriors and the strong. This one takes the retired and the ill.
It's not a weapon but
Not keeping up with Current Libtard Events I see.
originally posted by: RAY1990
a reply to: 5StarOracle
It isn't SARS 2. Until you can show me how Covid-19 was engineered I've got little else to say on the topic. Talking crap about a family of virus isn't going to work either.
Your theory is still garbage.
there is overwhelming evidence that it originated from a virology lab in wuhan providence, well surprise surprise-it broke out.