Developmental mechanisms facilitating the evolution of bills and quills.

@article{Schneider2005DevelopmentalMF,
  title={Developmental mechanisms facilitating the evolution of bills and quills.},
  author={Richard A Schneider},
  journal={Journal of anatomy},
  year={2005},
  volume={207 5},
  pages={
          563-73
        }
}
Beaks and feathers epitomize inimitable avian traits. Within individuals and across species there exists astounding diversity in the size, shape, arrangement, and colour of beaks and feathers in association with various functional adaptations. What has enabled the concomitantly divergent evolution of beaks and feathers? The common denominator may lie in their developmental programmes. As revealed through recent transplant experiments using quail and duck embryos, the developmental programme for… CONTINUE READING

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