-
(5BYA)
The Solar System Began to Form (a swirling mass of gass and dust) -
(4.6BYA)
Earth Began to Form (grew by colliding with space and debris) -
(4BYA)
The Estimated Age of Earth
Archea, a group of organishs which can thrive under harsh conditions, are formed -
(3.5BYA)
Lyghbya, which can grow in colonies and form structurs called stromatolites, are formed. -
(3BYA)
Cyanobacteria are formed, they can carry out photosynthesis -
(2.2BYA)
Earth appeared much as it does today -
(2BYA)
O2 levels reached today's levels -
(2BYA-1.5BYA)
Endosymbiosis: The theory of how the first eukaryote cells were formed -
(1600s-1900s)
-Francisco Redi proved flies do not spring up from meat
-First microscope made by Robert Hooke
-Lorenzo Spallanazzi retested spontaneous generation with flasks
-Pastuers expierement modified from Spallanzis proves spontaneous gneration a myth
-Radiometric dationg is used to find the half-life of materials and thus determine how long the have been present
-Oparin proposed gasses, when heated at high prseeures, could have formed simple organic compunds -
(1900s-present)
-Urley+Miller set up an exiriment to text Oparin's hypothesis and it was proven true
-Sidney Fox did extensive research on the structres that gave rise to cells
-Cech found RNA can act as a chemical catalyst
-Lynn proposed early prokaryotic cells could have formed a mutually benefical relationship
