Course Hero. "On the Origin of Species Study Guide." Course Hero. 18 Jan. 2018. Web. 22 June 2018. <https://www.coursehero.com/lit/On-the-Origin-of-Species/>.
Course Hero. (2018, January 18). On the Origin of Species Study Guide. In Course Hero. Retrieved June 22, 2018, from https://www.coursehero.com/lit/On-the-Origin-of-Species/
(Course Hero, 2018)
Course Hero. "On the Origin of Species Study Guide." January 18, 2018. Accessed June 22, 2018. https://www.coursehero.com/lit/On-the-Origin-of-Species/.
Course Hero, "On the Origin of Species Study Guide," January 18, 2018, accessed June 22, 2018, https://www.coursehero.com/lit/On-the-Origin-of-Species/.
While Darwin was able to describe how species variation occurs, he did not realize the mechanism was genetic inheritance.
A large portion of Darwin's work is spent describing how domestication occurs using the theory of natural selection.
The forms of life throughout the universe become divided into groups subordinate to groups.
The previous categorization system of species focused on arbitrary categories. Darwin argues species should be classified based on ancestry instead.
Darwin refers to the fundamental principle of natural selection—only organisms and populations with adaptive benefits will survive.
Man selects only for his own good: Nature only for that of the being which she tends.
While domestication is the result of human selection to acquire specific traits, Darwin argues nature does not select a "perfect" suite of traits for visual pleasure. Rather, nature selects traits that benefit the organism.
Modifications will add to the beautiful and harmonious diversity of nature.
Variations based on natural selection result in beautiful outcomes.
Here Darwin refers to the fossil record found in the earth's crust, emphasizing the record is not perfect. As a result, the record of species evolution is also imperfect.
I have sometimes felt great difficulty in understanding the origin ... of parts of little importance.
Darwin claims in many cases, certain organisms have characteristics that serve no purpose.
To admit all this is ... to enter into the realms of miracle, and ... leave ... Science.
Based on the evidence, it makes no sense to reject the theory of natural selection when considered from a scientific viewpoint.
It harmonizes ... with the view that there is no essential distinction between species and varieties.
The lack of differences between species and varieties emphasizes the difficulties inherent in defining a species.
Parallel succession of ... life throughout the world, is explicable on the theory of natural selection.
In many cases the variations Darwin argues exist are explained by the theory of natural selection in contrast to previous theories.
This wonderful relationship in the same continent between the dead and the living.
The connection between fossil species and modern species in the same region supports Darwin's theory of natural selection.
There is a striking parallelism in the laws of life throughout time and space.
The laws of uniformitarianism can be applied to both geological and natural processes. This allows natural selection to occur over long time periods.
Extinction ... has played an important part in defining and widening the intervals between ... groups.
Extinction helps to define separate species—those with adaptive benefits are more likely to survive.