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Started by rybicki
Tue, 08 Sep 1992 10:14
molecular genesis
Author: rybicki
Date: Tue, 08 Sep 1992 10:14
Date: Tue, 08 Sep 1992 10:14
117 lines
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4453 bytes
A slight reworking, to upset the fundamentalists:
IN THE BEGINNING:
Was the Cosmic Bubble
And the Bubble was without form
And brightness was upon the face of the void
A few milliseconds later
Expansion had occurred
And the Universe was lumpy
As it is, lo, unto this day
And the plasma cooled, and the atoms associated
And condensation occurred, in clouds and planetesimals
And complex molecules came to be, hydrocarbons among them
Yea, and formaldehyde (HCHO) too came to be
And upon the surface of the newly-formed planets
Yea, and perhaps even in the interstellar spaces
Surface catalysis caused polymerisations
And lightning, and deepsea thermal vents
And volcanoes, and hot springs
All of these served as energy sources for the primal soup
And nucleotides came to be, and short oligoribonucleotides,
And amino acids, and lipids
Bilayers and multilayers did the lipids form
And so did they entrap primitive ribozymes
Which did replicate themselves crudely according to their
kinds
And mutated, and made more ribozymes
And to each a different function:
So there were the polymerases
And the proto-ribosomes
And the spliceosomes
And the reverse transcriptase, and eventually also the DNA,
which was a partner to the RNA
And a better information store, though less generally useful
So it came to be that DNA usurped the role of RNA
And RNA was cast out into the proto-cytoplasm
Where it was a messenger, and an enzyme
And a helpmeet to the DNA
Though some of it escaped as viruses
Renegade genomes, beyond the cell
Even unto the outer darkness
Where there is wailing, and gnashing of teeth
For no obvious reason
And the DNA waxed fruitful
And it multiplied bounteously,according to its kinds
And it made new kinds, by Evolution
As the polymerases were not so accurate yet
And Urkaryote became Eubacteria and Archaea and Eukarya
And the Archaea and Eubacteria did excise all or most of
their introns
And stayed small
While Eukarya kept theirs, and grew
And the kinds did multiply all over the face of the planet
And maybe also on other planets
And did change the face of it, and the air above the ground
To an oxygen/nitrogen atmosphere they did change it
By photosynthesis, mainly
And this did allow more energetic metabolic processes to
occur
Which allowed more complex organisms
Which meant that, after three billenia
Animals could come to be
And it was so
And although large bolides did rain down upon the Earth
Yea, and comets
So as to cause ice ages and mass extinctions
So did the DNA keep multiplying and evolving
To make ever more complex organisms did it evolve
Until it came to pass
That apes did come down from the trees
In the dry Pleistocene, in Africa, did the apes walk
And maybe swim also
If we are to believe the Homo aquaticus story
Laid down in The Descent of Woman
But I digress
And they evolved to fit the new niche
Larger brains did they acquire
And upright carriage
And speech
And other problems
And lo, they did search for Meaning
And Truth
And Food and Sex also
And they did become confused, so they invented religion
To explain that which happened
And it came to govern them, so that they were not free to
think
Which is the cause of the problem
But the Mother will fix it, eventually....
--
_________________________________________________________________________
| | |
| Ed Rybicki | Now you've got the hang of it |
| Dept Microbiology | There's nothing you can't do with it |
| University of Cape Town | If you're very into it |
| PB Rondebosch 7700 | You can't go wrong.... |
| South Africa | |
| fax 27 21 650 4023 | - Mad John |
| ed@micro.uct.ac.za | (Ogden's Nut-Gone Flake, Small Faces) |
|_________________________________|_______________________________________|
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