Scientific Revolutions & Charles Darwin

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