Evolution || diginotes
1 minute read
Universe - 10 B.Y.A
Earth - 4.5 B.Y.A
Life originated - 4 B.Y.A
Theories of origin of life
1.Special creation
2.Abiogenesis
3.Biogenesis
- 1.Fransisco Redi
- 2.Spallanzane
- 3.Pasteurs
- 4.Panspermiatic theory or Extraterrestrial theory
- 5.Chemogenetic theory or Modern theory [most accepted theory]
Chemogenetic Theory or Modern theory of evolution
1.chemogeny
2.Biogeny
3.Cogenogeny
1.Chemogeny evolution
Explained by oparin and haldone
High temp
Energy
- 1.UV rays
-2.Lightning
-Broth formation (long time raining)
-gasses in atmosphere --- NH3,Ch4,CO2,H2O(Vap),He.
2.Biogeny
-Biomolecule formation
-Complex bio molecule formed DNA ------ RNA ---- Proteins.
3.Cogenogeny
1st life form formation & its evolution
*Proteins + brot
Some formed same aggeregate
Probionts *did not reproduce
Eiobiont.Coacervates ---- reproduced by budding.
*Coacervates
-Chemotreteropes
-Chemophotorophes
-anaerobic Chemoauto trophs
Photosynthesis - anoxygenic
*aerbic - organisms - oxygen in atmosphere
Urey & Miller Experiment
*Experimental proof of chemogenetic thery was given by Urey & Millar.
took round bottom flask with two electrods - passed electricity.
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