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PBS Evolution, Episode 6
The Mind's Big Bang

One of the most important engines of evolutionary change is sexual reproduction. Most organisms on Earth reproduce sexually, in spite of the time and effort involved in finding a suitable mate. Sexual selection is the root cause behind much of the extravagence seen in nature, particularly with birds, and may even have played a role in the development of certain aspects of human behavior.

Key Concepts: Asexual reproduction, sexual reproduction, clones, sexual selection, evolutionary psychology, behavioral adaptations.

Answer Key: Available at the biology instructor resources subscription page.


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