Evolution’s Wedges | Science News



Support credible science journalism.

Subscribe to Science News today.


Evolution’s Wedges

Finding the genes that drive one species into two

10:33am, June 17, 2011

Look to Texas to see evolution’s true colors. There, speckling the state’s green fields, you’ll find the annual phlox, a flower also known as “Texas pride.” Its petals, a light purple elsewhere, are bright scarlet in the southeast near Austin. This color change isn’t a whim: It’s the annual phlox’s response to the presence of a close cousin, the pointed phlox. Native to East Texas, the pointed phlox also has purplish flowers.

This article is available only to subscribing members. Join the Society today or Log in.

Get Science News headlines by e-mail.

More from Science News

From the Nature Index Paid Content