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michael_nielsen's profile
michael_nielsen
michael_nielsen
michael_nielsen
@michael_nielsen

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michael_nielsen

@michael_nielsen

Searching for the numinous. Co-purveyor of https://quantum.country/ 

San Francisco, CA
michaelnielsen.org
Joined July 2008

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    1. michael_nielsen‏ @michael_nielsen 27 May 2015
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      Anyone know of an instance where genome sequencing led to a revision in our notion of a species? cc @ctitusbrown

      20 replies 4 retweets 10 likes
    2. Neil Saunders‏ @neilfws 27 May 2015
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      Replying to @michael_nielsen

      @michael_nielsen do you mean "challenged/altered the definition of the word species" or "gave insight into a particular species" ?

      1 reply 0 retweets 1 like
    3. michael_nielsen‏ @michael_nielsen 27 May 2015
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      Replying to @neilfws

      @neilfws Both would be interesting!

      4 replies 0 retweets 0 likes
    4. Neil Saunders‏ @neilfws 27 May 2015
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      Replying to @michael_nielsen

      @michael_nielsen bacteria + archaea have always challenged the species definition; genomes show how much "lateral gene transfer" goes on

      1 reply 0 retweets 1 like
    5. michael_nielsen‏ @michael_nielsen 27 May 2015
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      Replying to @neilfws

      @neilfws Interesting. Looks as though archaea were discovered to be a separate group of prokaryotes through genome analysis.

      2 replies 0 retweets 1 like
    6. Neil Saunders‏ @neilfws 27 May 2015
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      Replying to @michael_nielsen

      @michael_nielsen although that discovery pre-dates genome sequencing http://en.wikipedia.org/wiki/Carl_Woese 

      1 reply 0 retweets 1 like
      michael_nielsen‏ @michael_nielsen 27 May 2015
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      Replying to @neilfws

      @neilfws Wikipedia says it was done by Woese in 1977 using genome sequencing....

      10:06 PM - 27 May 2015
      1 reply 0 retweets 0 likes
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        1. Neil Saunders‏ @neilfws 27 May 2015
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          Replying to @michael_nielsen

          @michael_nielsen just sequencing one gene (called "16S ribosomal RNA")

          2 replies 0 retweets 1 like
        2. michael_nielsen‏ @michael_nielsen 27 May 2015
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          Replying to @neilfws

          @neilfws Thanks for all the suggestions, Neil!

          2 replies 0 retweets 0 likes
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