Exam 1 - Exam1 17:18 ; CarlvonLinae(17071778...

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Exam 1 17:18 Only know one date for this test; He will tell us which one Carl von Linae (1707-1778)   Swedish botanist Pseudo Latinized names because he was obsessed with Latin He pseudo Latinized his own name which became Carolus Linnaeus He believed all species were created by God Principle of the Fixity of Species – species are fixed in their characteristics once they are  created by God (immutable or unchangeable) Jean Baptiste Lamarck (1744-1829) Invertebrate Zoologist Species can be transformed or changed over time First individual to explain a process of this Theory of Inheritance of Acquired Characteristics (Theory of Use and Disuse) Four different tenets of Lamarck’s Theory 1. All different organisms have certain “needs” to survive 2. Needs are satisfied by the use and modification of organs (or the production of new  organs) 3. The continued use of organs leads to an enhancement to their functional capability  and complexity 4. Changes in the organs that occur during one’s lifetime become inheritable and can be  passed to one’s offspring Ex. Giraffe’s length of neck is caused by them reaching for leaves and this trait is  passed on to their offspring
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A control group of mice was fed and let live their lives while an experimental group had  their tails cut off; over time the experimental group’s offspring still had the same length  tail – this disproves Lamarck’s theory. Georges Cuvier (1769-1832) Anatomist Celebrated academic in the French Academy He thought that changes to the organs in an organism would be disastrous to the  organism Theory of Catastrophism –  In the past, there were a series of catastrophes that caused the extinction of animals in  the affected region.  After the cataclysm, the area was repopulated by animals from  neighboring areas.  These migrant animals were similar in appearance but not identical  to those that went extinct. Charles Lyell (1797-1875) Geologist Disagreed with Cuvier’s argument Theory of Uniformitarianism – processes that occurred in the past to shape the earth  are the same as those that act today. Thomas Malthus (1766-1834) Theologian  He wrote an essay on the Principle of Population Humans increase exponentially over time but food resources increase linearly over time.  Some time there will be insufficient food to sustain the population. Warfare, famine, and disease caused limited increase in food.
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