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Spontaneous Generation
Theory in which living organisms develop from nonliving matter
made by Francesco Redi in which by making an experiment by placing fresh meat in each of two different jars he discovered and confirmed this theory. -
Creationists
18 Century:
The universe was created by God and everything happened because of him and this theory was about loving and believing that God was everything.
This theory was not invented by an specific person. It started with a bunch of people that believed in the same. -
Theory of Inheritance of Acquired Characteristics
This theory made by Lamarck, explains that an organism during its life will change in order to adapt to its environment depending on its needs (like survival things). -
The Origin of Species
Made by Charles Darwin in 1859, he explains that an organism passes thought a process in which this organisms change over time as a result of changes in heritable physical or behavioral traits and will allow him to adapt better, etc. -
Panspermia
This hypothesis proposed by Richter in 1865 was supported by Arrhenius in 1908 and it states that life exist all over the Universe and its thanks to space and that it can transport one place to another. -
Pasteurization
This process was named after Louis Pasteur who discovered that spoilage organisms can change with an specific time and a certain temperature.
Pasteurization is associated with milk and this idea was first suggested by Franz von Soxhlet in 1886. -
Biogenesis
This theory states that living things can only exist thanks to other living things and it is against the spontaneously generation theory and it was attributed to Louis Pasteur in the19th century. -
Endosymbiotic
Konstantin Mereschowsky first articulated this theory in 1910 and it regards to the evolution of eukaryote and prokaryote organisms. -
Chemical Evolution
This theory was proposed by A.I.Oparin in 1923 and J.B.S Haldane in 1928.
This theory explains that the origin of life on earth is thanks to the process of chemical evolution. -
Mutation
At the beginning of the 20th century, Dutch and Hugo de Vries had the idea that new species are formed from the sudden and unexpected emergence of alterations in their defining traits. Reference:
D. T. (2016, March 21). Mutation Theory. Retrieved September 4, 2016, from https://global.britannica.com/science/mutation-theory -
Founder Effect
This discovery was first noticed by Ernst Mayr in 1942 in whick he found that the founder effect occurs when a new colony is started by a few members of the original population. -
Bottleneck
This theory was first proposed by Broadbent in 1958 in which "The bottleneck theory" tells that individuals have a certain amount of resources that they can use when need it at one time. -
DNA Recombination
This was invented through a really hard work made by Herbert W. Boyer, Stanley N. Cohen, and Paul Berg in 1973.
This consists in combining DNA from two or more species or different organisms to create something new. -
Genetic Drift
Proposed by Ronald Fisher in the 20th century in which the "Genetic Drift" shows that different species of new generations in a small population will have the "chance" of surviving by luck. -
Gene Flow
The "Gene Flow" can also be called as migration because it shows the movement of the individuals or the genetic material they carry, from one population to another. -
Conclusion
At first I thought there were like only three theories in which they explained how life was created and was reasonable, but now I know that there are more theories and also that the different species mechanism are different and that it affects all the living beings and that this can affect our lives because our abilities changes constantly depending in our needs and only certain populations survives depending on how they interact with the environment.
