Descent with Modification Video Lessons

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Problem: Why is Darwin considered original in his thinking? a. He demonstrated that evolution is continuing to occur now. b. He provided examples of organisms that had evolved over time. c. He proposed the mechanism that explained how evolution takes place. d. He observed that organisms produce large numbers of offspring. He described the relationship between genes and evolution.

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Evolution: change in the heritable characteristics of biological populations over successive generations

Natural Selection: proposed by Charles Darwin as a mechanism of evolution


Postulates of Natural Selection:

1. Individual Variation - Organisms in a population will vary from one another in different characteristics.

2. Heritability - The traits of an organism are inherited from both of its parents.

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Problem Details

Why is Darwin considered original in his thinking? 

a. He demonstrated that evolution is continuing to occur now. 

b. He provided examples of organisms that had evolved over time. 

c. He proposed the mechanism that explained how evolution takes place. 

d. He observed that organisms produce large numbers of offspring. He described the relationship between genes and evolution.

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