Scientific Revolutions & Charles Darwin
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#content #criticalthinking #community #collaboration #communication #creativity
Warm Ups, etc:
Lecture Notes: #content
Evolution
-the change in a population over time
-populations change and become extinct all of the time
-99.99% of species in history are extinct
Jean Baptiste Lamarck
French naturalist who proposes a mechanism for change in early 1800’s
Organisms strive to improve themselves
Principle of Use and Disuse- structures that are used grow, those disused waste away
Inheritance of Acquired Characteristics- changes that occur in a lifetime are passed to offspring
Disproved by August Weismann: Cut the tails off of mice for many generations (disuse), but mice always born with tails
James Hutton and Charles Lyell- revolution in Geology
found evidence suggesting the Earth was significantly older than as stated in the bible
Principle of Uniformitarianism- things occur today as they have in the past
Charles Darwin
naturalist on the HMS Beagle, 5 year voyage around the world
recorded notes, collected samples, made careful observations
noted that living animals often similar to fossils
Objectives and Vocabulary: #content
BIO.7 The student will investigate and understand how populations change through time. Key concepts include
a) evidence found in fossil records;
b) how genetic variation, reproductive strategies, and environmental pressures impact the survival of populations;
c) how natural selection leads to adaptations;
d) emergence of new species; and
e) scientific evidence and explanations for biological evolution.
Population
Offspring
Variation
Selective pressure
Survival
Extinction
Galapagos Islands
Charles Darwin
Theory of Natural Selection - a process by which organisms with traits well suited to an environment survive and reproduce at a greater rate than organisms less suited to that environment, and is governed by the principles of genetics. The change in frequency of a gene in a given population leads to a change favoring maintenance of that gene within a population and if so, may result in the emergence of a new species. Natural selection operates on populations over many generations.
Adaptation
Activities, Assignments, Etc.
Bookwork 10.2-10.4
Define all Vocab
Answer the following:
p 285 fig2.2 Explain, #4,5
p 287 fig3.1 Connect
p 289 fig3.2 Summarize
p 290 Data Analysis 1,2
p 291 Explain
p 296 #5
Galapagos Islands- isolated volcanic islands far west of South America, distinct climates on each
tortoises had different shell shapes to suit climate
birds had similar features, but distinctly different beaks and food sources
Returned to England, continued to study, experiment, and think
*Developed an idea that would revolutionize science and scientific study
Published in his book On the Origin of Species
He published 20 years after coming up with the theory
He knew the public (and Church) would have problems with his ideas
The idea was also developed by another man, Alfred Wallace at the same time