Scientists in Chile have created a chicken embryo that developed dinosaur-like feet after genetic manipulation, highlighting the evolutionary link between theropod dinosaurs and birds.
The research published last week in the journal Evolution shows that “by inhibiting early maturation of a leg of the chicken embryo, the leg reverts to the shape that dinosaurs’ legs had,” said Alexander Vargas, one of the six researchers at the University of Chile.
Theropods, a group of dinosaurs, started as carnivores but evolved to eat plants and insects.
Birds evolved from small theropods in the Jurassic period more than 145 million years ago.
In their study, scientists manipulated the Indian Hedgehog Homolog gene common to all animals, including man.
They were trying to pinpoint when birds had a dinosaur-like fibula bone. When the researchers delayed early development, the bone took on the tubular shape it once had in dinosaurs.