A positional information gradient of sonic hedgehog is required for flight feather formation in avian wings
Lara C. Busby, Cristina Aceituno, Caitlin McQueen, Constance A. Rich, María A. Ros, Matthew Towers
The paper shows that a Sonic hedgehog signaling gradient in chick embryos specifies flight feather patterns and identity through gene expression.
Development · May 1, 2020Peer-reviewedDevelopmental Biology