Chicken will grow teeth when pigs can fly.
Well, better start searching the skies for flying porkÃ¢â‚¬â€scientists have discovered a mutant chicken with a full set of crocodile-like chompers.
The mutant chick, called Talpid, also had severe limb defects and died before hatching. It was discovered 50 years ago, but no one had ever examined its mouth until now.
The finding made scientists curious whether healthy chickens still possessed the 80-million-year-old genetic pathway for producing teeth………
By making a few changes to the expression of certain molecules in the pathway, the researchers were able to induce tooth growth in normal developing chickens. These teeth also looked like reptilian teeth and shared many of the same genetic traits, supporting the scientists’ hypothesis.
Here’s the citation:
The difference between genome and phenome can be extravagant. “Front-loading” suggests that there’s a lot to the genome that is not seen in the phenome. This discovery should make for some interesting head-scratching.