research Skin regional specification and higher-order HoxC regulation 3 citations , March 2025 in “Science Advances” A specific DNA duplication in Polish chickens affects feather shape by altering gene expression.
research Evolution of hard proteins in the sauropsid integument in relation to the cornification of skin derivatives in amniotes 86 citations , April 2009 in “Journal of anatomy” Hard skin features like scales, feathers, and hair evolved through specific protein changes in different animal groups.