Mutant Chicken Embryo Grows Alligator like Teeth

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Mutant Chicken Embryo Grows Alligator like Teeth

As if the world wasn't weird enough, chickens really do have teeth. "Mutant Chicken embryo" sounds like the beginning of a B grade horror movie.
... Quote:
Working late in the developmental biology lab one night, Matthew Harris of the University of Wisconsin noticed that the beak of a mutant chicken embryo he was examining had fallen off. Upon closer examination of the snubbed beak, he found tiny bumps and protuberances along its edge that looked like teeth--alligator teeth to be specific.

The accidental discovery revealed that chickens retain the ability to grow teeth, even though birds lost this feature long ago. The finding also resurrected the controversial theory of one of the founders of comparative anatomy, Etienne Geoffroy Saint-Hillaire.

In the early 19th century, Saint-Hillaire observed that developing parrots have tiny bumps on their beaks that resemble teeth, something he ascribed to modern animals deriving from more basic primitive forms. But due to his developing battles with Georges Cuvier over evolution, the finding was forgotten until Harris, a graduate student, rediscovered it nearly 200 years later.

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By YCON: posted on 24-2-2006








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