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Summary of The Origin of Species 

4.6 . 2142 reviews

Short summary

English naturalist, geologist, and biologist, Charles Darwin (1809-1882), gave a detailed account of where living species come from in his book, The Origin of Species. He made a huge contribution to the science of evolution by his proposition that all living organisms have a common ancestry. He argues that species have been created from other species and have a common origin rather than being independently created. While some have blamed the modification and adaptation of species on external circumstances such as climate, predation, and so on, Darwin believes the structure of organisms is not solely dependent on these factors. Charles Darwin’s work comes purely from his observations, and he recommends that future work be done to ascertain these claims. “...any being, if it varies however slightly in any manner profitable to itself, under the complex and sometimes varying conditions of life, will have a better chance of surviving, and thus be NATURALLY SELECTED.” ~ Charles Darwin

Table of content

  • Summary of The Origin of Species
  • About the author
  • What is The Origin of Species about?
  • Who should read The Origin of Species
  • Topics in The Origin of Species
first key point

The modification of organisms has been significant due to natural selection

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Naturalists formerly held the view that species are independently created. But Charles Darwin and some other naturalists began to question the immutability of species. They claim that species that appear similar are descended from the same species, only that their “ancestors” are mostly extinct.

In this summary, you’ll discover Darwin’s proposition of natural selection as the cause for the divergence of character among species. The less sophisticated life has given way to the more improved version. He also avers that domestication by man may have caused the variations among species. A major issue is the topic of natural selection—the survival of the fittest due to extra advantages a species gets over its counterparts—and the struggle for existence.
Natural selection describes the struggle for existence among species whereby some organisms get a better chance of survival over their counterparts.
Some of the objections to the theory of natural selection have been the difficulty in accepting how a simple organism can evolve into a complex one, how animals are able to gain cognition, how different species can interbreed to produce a new species, and the fact that the archeological evidence for the theory has been imperfect. This summary responds to the difficulties with the geological succession and geographical distribution of these organisms through time and space.

While there is much to be understood on the origin and variety of species, this foundational work from Charles Darwin provides a basis for further investigation of this subject matter. It is important to carry on this study because the present welfare and future success of living organisms depend on it.
Finally, [...] it is far more satisfactory to look at [...] instincts [...] as small consequences of one general law, leading to the advancement of all organic beings, namely, multiply, vary, let the strongest live and the weakest die. ~ Charles Darwin
second key point

Darwin’s theory posits that various species originated from common ancestors through natural selection

The most important source of the variability of species is domestication because it changes the living conditions and reproductive capacities of species. The use, or disuse, of some parts of the species due to these changes also plays a significant role in determining what they become. Other factors that affect the variability of species include correlated growth and living conditions. When all these indices combine, they produce a complex species from a simple one.
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third key point

Humans unconsciously selected plants and animals that showed desirable traits

fourth key point

Species struggle for survival because there is no room to accommodate their perpetual increase

fifth key point

The formation of all organic beings has been based on the law of unity of type and the law of the conditions of existence

sixth key point

There is so much that is unknown about the laws of variation

seventh key point

Some naturalists have raised objections against Darwin’s theory on the origin of species

eighth key point

Conclusion

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What is The Origin of Species about?

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