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Evolutionary developmental biology

Head start

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Some neat transgenic experiments show how the evolution of the vertebrate head stemmed, at least in part, from elaboration of controls on pre-existing genetic machinery.

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Figure 1: The cephalochordate amphioxus compared to a primitive vertebrate (similar to a modern-day lamprey).
Figure 2: Manzanares et al.1 show that gene sequences from amphioxus can perform developmental roles specific to head development in vertebrate embryos.

References

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Correspondence to John R. Finnerty.

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Finnerty, J. Head start. Nature 408, 778–781 (2000). https://doi.org/10.1038/35048648

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