Overview

The discovery of the platypus had the scientific world in an uproar with its mammal-like and bird-like features. How was one to classify the platypus? This case study uses this issue to model the scientific process, with scientists arguing, debating, collecting more evidence, and revising their opinions as new data become available.

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Overview

Understanding the process of development can help us understand how some major evolutionary changes occurred and why others did not.

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Overview

This worksheet guides students through an interactive online module entitled Why the Eye? on the Understanding Evolution website. Students gain a better understanding of the different types of animal eyes and how natural selection can account for the evolution of a complex organ.

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Overview

In lecture three of a four part series, evolutionary biologist David Kingsley examines the original objections to Darwin's theory and shows how modern evidence supports the theory.

This lecture is available from Howard Hughes' BioInteractive website.

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Overview

Eyes are something of an icon of evolution. How did such an integrated, multi-part adaptation evolve? While many different animals have complex eyes, untangling their evolutionary history reveals both remarkable diversity and surprising similarity.

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