Eyespot development on butterfly wings: the focal signal.

@article{French1995EyespotDO,
  title={Eyespot development on butterfly wings: the focal signal.},
  author={Vernon French and Paul Martin Brakefield},
  journal={Developmental biology},
  year={1995},
  volume={168 1},
  pages={
          112-23
        }
}
The eyespot colour pattern on butterfly wings is specified in the early pupal epidermis by signals from a central "focus." In Bicyclus anynana we show that a small square of focal epidermis, grafted to a range of distal wing sites, induces eyespot formation in surrounding host tissue. Signaling is limited to the focus, and even an adjacent (parafocal) graft does not maintain its normal fate (of contributing to the eyespot) and does not influence its surroundings. Along the wing, there is an… CONTINUE READING
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