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This video (12:45) is fourteenth in the Crash Course Biology series. It covers the process of natural selection, the key mechanism of evolution.1) Natural Selection 1:272) Adaptation 2:563) Fitness 3:364) Four Principals 3:54a. Variations 4:01b. Heritability 4:17c. "The Struggle for Existence" 4:25d. Survival and Reproductive Rates 5:005) Biolography 5:596) Modes of Selection 7:40a. Directional Selection 8:17b. Stabilizing Selection 8:56c. Disruptive Selection 9:277) Sexual Selection 10:228) Artificial Selection 11:24


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natural selection genetics peppered moth inherited traits population genetics charles darwin darwin on the origin of species evolution adaptation galapagos finches fitness variation phenotype heritable malthus survival rate reproductive rate crossbreeding inbreeding genotype directional selection stabilizing selection disruptive selection selective pressures sexual selection artificial selection selective breeding



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Update Standards?

SCI.9-12.SC.912.L.15.D: Science

Natural selection is a primary mechanism leading to evolutionary change.

SCI.9-12.SC.912.L.15.13: Science

Describe the conditions required for natural selection, including: overproduction of offspring, inherited variation, and the struggle to survive, which result in differential reproductive success.

SCI.9-12.SC.912.L.16.D: Science

Reproduction is characteristic of living things and is essential for the survival of species.
Curriki Rating
On a scale of 0 to 3
On a scale of 0 to 3

This resource was reviewed using the Curriki Review rubric and received an overall Curriki Review System rating of 3, as of 2014-08-06.

Component Ratings:

Technical Completeness: 3
Content Accuracy: 3
Appropriate Pedagogy: 0

Reviewer Comments:

Brothers John and Hank Green have created these engaging and accurate “crash course” videos on topics ranging from chemistry to world history, biology, literature, and ecology.  Each video is 10 – 15 minutes long and suitable for all ages, though the content (and humor) may be best suited for middle school through adult learners.  You can learn more about the specific contents of this particular video (from the Biology collection) by clicking the information tab above.  These videos serve multiple purposes well from use in the classroom to facilitating one’s own lifelong learning.  
Curriki Review System
August 6, 2014

This video is part of the larger collection called Crash Course Biology. You can learn more about this collection by reading its review and comments. You can also find the most recent Crash Course videos in all subjects at the Crash Course YouTube channel .

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