bits of pieces

darwin

1809

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his birth

1828

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Enters Christ College, Cambridge

1842

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First unpublished ideas on Evolution

1859

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Publication of The Origin of Species

1882

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his death

evolution

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-change in the herediatry characterisitics of a group of organisms over the course of generations

mutation

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a permenant change in the genetic material usually in a single gene

fossil

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any evidence on ancient life

natural selection

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greater reproductive success among particular members of a species arising from genetically determined characteristics that confer an advantage in a particular environment

leader of progress

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it is like climbing a ladder...organisms are getting better

divergence

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dividing one specie into two or more species

speciation

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Evolutionary process by which new biological species arise

variation

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Genetically determined differences in the characteristics of members of the same species

species

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a group of organisms that can breed with each other to produce fertile offspring & cannot breed with the members of other groups

Subtopic

misconceptions

1st misconception

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Evolution is a “ladder of progress”, organisms are constantly getting better.

2nd misconception

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Evolutionary theory is a theory about the origin of life.

3rd misconception

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because fossil record is not his means evolution theory is false.

4th misconception

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evolution is not observable or testable

5th misconception

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Evolution and religion are incompatible.

5 propositions

1st propostion

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Artificial selection has had a marked effect on the form of domesticated plants and animals, although it has only been applied for a small number of generations

2nd propostion

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Imagine the changes which might be effected if there were a similar force acting in nature over millions of years.

3rd propostion

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the selective action of the struggle for existence between species and within species

4th propostion

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If a change occurs in the physical environment, individuals will be exposed to new circumstances, and competition from a different set of inhabitants

5th propostion

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All species are characterised by variation between individuals. In any new environment there will be different conditions from place to place. this principle of divergence is the most important factor in the evolution of the new species