Chap 19 - BIO 2.docx - 1 Aristotle viewed species as...

Info icon This preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
1 Aristotle - viewed species as fixed (unchanging) - Concluded that life forms could be arranged on a scale of increasing complexity, later called the scala naturae ( scale of nature ) Carolus Linnaeus (1707-1778) Swedish physician who developed the two part, or binomial format of naming species Scottish geologist James Hutton proposed that Earth’s geological features could be explained by gradual mechanisms, such as valleys formed by rivers wearing through rocks. Charles Lyell ( leading geologist of darwin’s time) Incorporated Hutton’s thinking into his proposal that the same geological processes are operating today as in the past and at the same rate. Lamarck’s Hypothesis of Evolution Jean - Baptiste de Lamarck proposed a mechanism for how life changes over time. Use and disuse - the idea that parts of the body that are used extensively become larger and roger, while those that are not used deteriorate. Ex: giraffe stretching its neck to reach leaves on high branches Inheritance of acquired characteristics - stated that an organism could pass these modifications to this offspring. Ex: giraffe neck has evolved over many generations as giraffes stretched their neck even higher. Experiments show that traits acquired by use during an individual's life are not inherited in the way proposed by Lamarck, but he did recognize that the match of organisms to their environments can be explained by gradual evolutionary change. 19.2 Charles Darwin Protege of John Henslow, a botany professor Embarked on the voyage of the Beagle, were the observed and collected thousands of plants and animals.
Image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
2 Darwin hypothesized that the Galapagos had been colonized by organism that had started from South America and then diversified, giving rise to new species on the various island.
Image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern