This mutation is due to an 80-million year old reptile gene (found in living reptiles as well). The question is, why would a chicken have this gene?
chickens are full of reptile genes. the scales on the bottoms and sides of their feet (not the scutes on the top) are reptilian scales. it's not suprising at all that chickens have genes for reptilian teeth, that has been turned off. bakker made a comment years ago that if we wanted to make a real jurassic park, it'd be better to take a modern bird embryo and switch on the reptile charateristics like teeth and tails.
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