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Evolution Debate

Nov 6, 2009 | Posted by: Noodly James

Butterflies: How One Species Can Become Two

Full story: www.sciencedaily.com

The cause of this particular break-up? A shift in wing color and mate preference.Our paper provides a unique glimpse into the earliest stage of ecological speciation, where natural selection to fit the environment causes the same trait in the same population to be pushed in two different directions," says Marcus Kronforst, a Bauer Fellow in the Center for Systems Biology at Harvard University who received his doctor's degree at The University of Texas at Austin. "If this trait is also involved in reproduction, this process can have a side effect of causing the divergent subpopulations to no longer interbreed. This appears to be the process that is just beginning among Heliconius butterflies in Ecuador."

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Daily Horoscope for December 28

Aquarius

Make contact with any friends you haven't seen recently. You're feeling very sociable and you could be inspired to arrange a get-together so you can catch up on all the latest news. This is also a fantastic day for having a heart-to-heart with a chum, in which you both talk honestly about the way you're feeling or about recent experiences. It will help to bring you closer together.

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