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9 20 19 bio notes

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Course

Cellular Biology (BIOL 201)

13 Documents
Students shared 13 documents in this course
Academic year: 2017/2018
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Gonzaga University

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9/20/

Darwin 1. A Brief History

  • In 1858 a package came in the mail from Alfred Russel Wallace. It contained a paper describing the concept of natural selection.

  • That summer, Lyell presented Wallace’s paper and Darwin’s unpublished writing at a meeting.  (1859) Darwin published The Origin of Species

  • The book was an enormous success. It did two things:  It convinced most people of the reality of natural selection  It provided a testable mechanism for evolution.

B. Darwin 2. The Reality of Evolution

  • Darwin drew on multiple lines of evidence, by visiting many similar volcanic islands.

B. Darwin 2. The Reality of Evolution a. DISTRIBUTION

  • If species are created for its location (Volcanic islands) and it is unchanging, these similar islands should:

    1. Have related species (similar conditions)
    2. No relationships with any other species

  • Each island species had species closely related to species of nearby mainland islands

B. Darwin

  1. The reality of Evolution b. Back to Fossils

  • Fossils show species were different in the past ; sequences make evolutionary sense.

  • Also many intermediates; Archaeopteryx and an array of bird and dinosaur fossils now span the transition between reptiles and birds

B. Darwin 2. The reality of Evolution c. Comparative Anatomy

  • Anatomy reflects evolutionary relationships even when species live in dramatically different environments.

Comparative Anatomy: Study of similarities and differences in the anatomy of organisms (related to phylogeny)

Homology : Similarity in structure due to common ancestry ( Human, Cat, Whale, Bat have the same bones)

Vestigial Traits: nonfunctional traits whose continued presence is a historical remnant of a trait that had function in an ancestor (Appendix in humans)

  • Organisms are not perfectly or “intelligently” designed. They show evidence of evolutionary past, not flawless design for the present. They have History.

  • All mammalian spines are built on the same basic design.

B. Darwin 2. The reality of Evolution c. Embryology

  • Evolution also leaves traces in embryological development
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9 20 19 bio notes

Course: Cellular Biology (BIOL 201)

13 Documents
Students shared 13 documents in this course

University: Gonzaga University

Was this document helpful?
9/20/19
Darwin
1. A Brief History
- In 1858 a package came in the mail from Alfred Russel Wallace. It contained a
paper describing the concept of natural selection.
- That summer, Lyell presented Wallace’s paper and Darwin’s unpublished writing
at a meeting.
(1859) Darwin published The Origin of Species
- The book was an enormous success. It did two things:
It convinced most people of the reality of natural selection
It provided a testable mechanism for evolution.
B. Darwin
2. The Reality of Evolution
- Darwin drew on multiple lines of evidence, by visiting many similar volcanic
islands.
B. Darwin
2. The Reality of Evolution
a. DISTRIBUTION
- If species are created for its location (Volcanic islands) and it is unchanging, these
similar islands should:
1. Have related species (similar conditions)
2. No relationships with any other species
- Each island species had species closely related to species of nearby mainland
islands
B. Darwin

Students also viewed

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