Monday, July 12, 2010

Right Handed Snails

If you want to dig deeper into the snail shell, try this in Pubmed.  Most species are composed entirely of individuals that are one or the other type.  In exceptional cases, populations may differ in their handedness, or chirality, but within a single population, all individuals tend to be alike.  The mechanisms are spelled out in Pubmed.

* NPR story on Southpaw Snails 'Dodge' Right-Handed Crabs
You can get into counting snails with your local stream by joining a Stream Team.

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