Near-reciprocal phenotypes caused by inactivation or indiscriminate expression of the Drosophila segmentation gene ftz.

Abstract excerpt

Early in development, Drosophila embryos express the segmentation gene fushi tarazu (ftz) in a 'zebra' pattern of active and inactive stripes, each about the width of a segment primordium. If the ftz gene is prevented from functioning, alternating portions of the body normally derived from the active stripes fail to develop, resulting in larvae which lack the denticle bands normally formed by the mesothorax and...

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