In a nutshell Scientists temporarily reversed feather evolution in chickens by blocking a key developmental pathway, causing the embryos to grow simplified, unbranched feather structures resembling ...

Feathers may define birds today, but their story began millions of years ago in creatures that looked very different from modern avians. A new study has just pushed the boundary of evolutionary ...

This involved injecting chicken embryos with a molecule that inhibits the Shh pathway – and by day nine of embryonic development, something unusual was beginning to occur. Instead of the ...