Evolution of DNA


Introduction
First Protein Transcription
First Genetic Replication
First Feedback
Puddle Evolution
First Dispersal & Evolution
First Parasite
First Organism
First Cell Metabolism
First Self-Sufficiency
Aromatic Assistants
First Assimilation
First Transfer Molecules
Eight Molecule Life
Complementary Base Pairs
Energy Sources
Conquering the Oceans
First Cells
Cellular Explosion
Gene Regulation
Chromosomes
First DNA
Introns
Wider Reading Frames
Complementary Triplets
Cellular Scripts
The Spread of Foxy
Another Parasite-- Transposons
First Schism
Improved Gene Regulation
Cell Structures
Eukaryote Explosion
Multi-Cellular Scripts
Cambrian Explosion
Epilog
Appendix 1-- Prebiotic Earth
Appendix 2-- Primordial Puddles
Appendix 3-- Primordial Catalysts
Appendix 4-- C Value Enigma
Cast of Characters

Introduction-- Footnotes

Oparin, A. I., 1938 The Origin of Life, Dover Publications, New York.

Haldane, J. B. S, 1954 The Origin of Life, New Biology, 16:12-27.

Darwin, Charles, 1871 letter to botanist Joseph Hooker.

Woese, C, 1967 The Genetic Code, Harper and Row, New York

Epstein, H. F. and Shakes, D. C., 1995 Caenorhabditis elegans: Modern Biological Analysis of an Organism. Academic Press, San Diego.

Some scientists have proposed that one gene could code for more than one property, but that raises its own problems, since mutations in a gene would affect several properties (some possibly for the better, but some for the worse). That kind of overlap is fine for bacteria that need maximum metabolic efficiency, but for us mammals it would make evolution go far too slowly.

Back

   

 

Site launched 8/7/07

Contact the Author