Duplicated Wing (IMAGE)

The Company of Biologists

Duplicated Wing

Caption

Grafts of Sonic hedgehog-producing cells produce a duplication of the wing, including its feathers. Sonic hedgehog is normally produced at the posterior margin of the embryonic chicken wing bud. Grafts of Sonic hedgehog-producing cells were made to the anterior side of a wing bud of another chicken embryo. This operation duplicates the tissues of the mature wing, including the black-pigmented feather buds as shown in the image. The flight feathers buds are the ones protruding from the left and right margins of the wing. Duplicated tissues are on the anterior side of the image (left), and normal tissues are on the posterior side (right).

Credit

Matthew Towers, University of Sheffield

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