Re: Why did eukaryotes evolve?

feedbackdroids_at_yahoo.com
Date: 03/29/05 

Date: Tue, 29 Mar 2005 11:48:17 -0500 (EST)

Henkka wrote:
> Hi,
>
> Would anyone happen to have speculations as to why eukaryotes
evolved?
> In short, what can single-celled eukaryotes (with all of that
> complicated machinery) do that prokaryotes can't? Engulfing other
> microbes is one such often-mentioned thing. Any other possibilities?
> Many protoctists do their living differently - the single-celled
> algae, for instance. Possibly they are doing something differently
> from prokaryotes, with whose reproductive efficiency eukaryotes can't
> compete.
>
> Henri

What I find truly mind-boggling is that it apparently took between 2BY
and 3BY after the prokaryotes appeared before the first eukaryotes came
along. What is the generation time of a typical bacterium? A couple of
hours? How many generations in 2-3BY? Why was the process of evolving
from one to the other so conservative?

Relevant Pages

  • Article: Is the Term Prokaryote Obsolete?
    ... Such proposals have sustained the concept that prokaryotes ... evolved into eukaryotes -- an evolutionary model invoked by the terms ... first of ribosomal RNA genes in the late ... Comparisons of ribosomal RNA sequences show a three-domain tree of life. ...
    (sci.bio.evolution)
  • Re: Why did eukaryotes evolve?
    ... >> and 3BY after the prokaryotes appeared before the first eukaryotes ... What is the generation time of a typical bacterium? ... > Proterozoic ocean was largely sulfidic as ...
    (sci.bio.evolution)
  • Re: How many dinosaur species survived the KT event?
    ... Eukaryotes are the best prokaryotes. ... ITYM eukaryotes are the best karyotes. ... eukaryote could emerge, except from a simpler cell, which would have to ... based on possession of particular characters. ...
    (talk.origins)
  • Re: How many dinosaur species survived the KT event?
    ... Eukaryotes are the best prokaryotes. ... ITYM eukaryotes are the best karyotes. ... eukaryote could emerge, except from a simpler cell, which would have to ... that trouble exists in UC's mind. ...
    (talk.origins)
  • Re: How many dinosaur species survived the KT event?
    ... Eukaryotes are the best prokaryotes. ... ITYM eukaryotes are the best karyotes. ... eukaryote could emerge, except from a simpler cell, which would have to ... based on possession of particular characters. ...
    (talk.origins)