Limbs and tail as evolutionarily diverging duplicates of the main body axis.

@article{Minelli2000LimbsAT,
  title={Limbs and tail as evolutionarily diverging duplicates of the main body axis.},
  author={Alessandro Minelli},
  journal={Evolution & development},
  year={2000},
  volume={2 3},
  pages={157-65}
}
Contrasting hypotheses have been proposed to explain the pervasive parallels in the patterning of arthropod and vertebrate appendages. These hypotheses either call for a common ancestor already provided with patterned appendages or body outgrowths, or for the recruitment in limb patterning of single genes or genetic cassettes originally used for purposes other than axis patterning. I suggest instead that body appendages such as arthropod and vertebrate limbs and chordate tails are… CONTINUE READING

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