Steroid-Induced Gene Alters Effect of Signaling Pathway (IMAGE)

Washington University in St. Louis

Steroid-Induced Gene Alters Effect of Signaling Pathway

Caption

Two switches must be thrown to turn on a target gene (Distal-less) that induces the formation of black spots on the legs called bracts, one of many changes in the transformation of a fruit fly pupa to an adult. One (left) ensures that the target gene is turned on only in the pupa. The other (right) controls where it turns on in the pupa.

Credit

Ian and Dianne Duncan

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