Evolutionary genetics: no coming back from neverland.

Artyom Kopp

Index: Curr. Biol. 22(23) , R1004-6, (2012)

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Abstract

Host-plant specialization plays a key role in insect evolution, but little is known about its molecular basis. A new paper shows that a cactus-feeding fly became restricted to its host by changes in an enzyme that converts dietary sterols into essential hormones.Copyright © 2012 Elsevier Ltd. All rights reserved.