Understanding Evolution: your one-stop source for information on evolution
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Found 2 resources for the concept: Some lineages remain relatively unchanged for long periods of time

imageParsimonious explanations for punctuated patterns
Punctuated equilibrium is sometimes erroneously cited as evidence that evolutionary biology still hasn't figured out how evolution works. In fact nothing could be further from the truth. Punctuated equilibrium builds on (not tears down!) established evolutionary theory. Find out how the process works.
This article appears at SpringerLink.

Audience: 13-16

Source: Evolution: Education and Outreach

Resource type: Article

imageEvo in the news: Influenza, an ever-evolving target for vaccine development
Some vaccines provide lifelong protection with one or a few doses, but the flu requires a new shot every year. And in some years, the flu shot is hardly effective at all. Why is the flu vaccine different from so many other vaccines? This news brief from February 2013 provides the evolutionary explanation.

Audience: 13-16

Source: UC Museum of Paleontology

Resource type: Evo in the News article

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