Expression of Gene Key to Insect Metamorphosis (IMAGE)

Washington University in St. Louis

Expression of Gene Key to Insect Metamorphosis

Caption

Key to fruit fly metamorphosis are genes whose expression is induced by pulses of a steroid hormone. In this adult male fly, one of these steroid-sensitive genes, E93, is expressed in every tissue (clockwise from top): mouth parts, eye, thorax, abdomen, leg, wing and antenna.

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Ian and Dianne Duncan

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