09 June 2006

Are Eukaryotes reversible?

This Massey (NZ) Uni article hints at a scientific publication which implies that Eukaryotes ("multi-nucleated beings") did not develop from Prokaryotes ("single-nucleus beings") as has often been supposed in the past.

“The article was carefully edited to review a massive amount of genomic and biological information about the evolutionary trajectory of modern eukaryotes, as distinct from that of prokaryotes — organisms whose DNA is not contained within a nucleus.”

So... another major new story-thread in biology! The only constant thread is that of change?

2 comments:

Leon Brooks said...

If that doesn't sound sweeping enough, wave your thinkatron over these words for a while:

[START] From their origin, eukaryotes were complex. They had introns (& complex spliceosomes — half of whose 78 proteins are unique to eukaryotes — to handle them), mitosomes, hydrogenosomes, mitochondria, nuclei, nucleoli, the Golgi apparatus, centrioles, & an endoplasmic reticulum, along with "hundreds of proteins with no orthologs evident in the genomes of prokaryotes."

Much text there describes unprecedented features of eukaryotes, which "cannot be deconstructed into features inherited directly from archaea & bacteria." [FINISH]

Leon Brooks said...

Quote, BTW is ex-Wikipedia. Thanks, WP. (-: