Quote (heepajunk @ Sun, Mar 8 2009, 06:08am)
http://www.youtube.com/watch?v=U6QYDdgP9eg
Nice video showing how conditions of replication, variation, and competition can arise by purely mechanical and chemical forces.
Once these are in place evolution emerges as a consequence, i.e. there is increased complexity over time.
Laughed really hard at the part where they talked about gravity theory and germ theory! Sounds like a load of bullshit if you ask me. Germs are constantly in contact with gravity and spatial
forces, in fact the reason why germs die when alcohol is applied is because the density of alcohol in STP (
Standard
Temperature and
Pressure -> atmospheric
relationship with gravity) causes the micropores on the surface of germ cell walls to open and explode. Seems like a very raw theory with some potential but it "Throws the baby out
with the bathwater" unfortunately. ROFL@ the part about "complex protein machinery", during the segment about the modern DNA structure, which is hillarious because they have
in microbiological studies the very mechanism which creates DNA and why it was created during the critical period of the earth when early microbes were in existence. The most stable
theory that I personally believe is Endosymbiosis, which argues that prokaryotic cells were the first to combine with archea bacteria. This symbiosis is what created the first eukaryotic
cells. Quote from article: "[endosymbiosis] is a concept that mitochondria and chloroplasts are the result of years of evolution initiated by the endocytosis of bacteria and blue-green algae
which,
instead of becoming digested, became symbiotic".They have reproduced conditions of early earth and concluded that with the conditions of that famous 1950's "Life" experiment
did indeed create simple amino acid structures which had the significant potential to create simple proteins. Quote : "Miller's experiment showed that organic compounds such as amino acids, which are essential to cellular life, could be made easily under the conditions that scientists believed to be present on the early earth"
", Juan Oro found that amino acids could be made from hydrogen cyanide (HCN) and ammonia in an aqueous solution. He also found that his experiment produced an amazing amount of the nucleotide base, adenine "
Adenine, Guanine, Cytosine, thymine (DNA)
Sources:
Endosymbiosis:
http://www.mrs.umn.edu/~goochv/CellBio/lectures/endo/endo.htmlMiller/Urey Experiment:
http://www.chem.duke.edu/~jds/cruise_chem/Exobiology/miller.html This post was edited by Jazz_Thing on Mar 9 2009 07:56pm