45 citations
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October 2015 in “BMC Genomics” Chicken feather growth involves specific genes and shares similarities with hair development.
99 citations
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July 2012 in “PLoS Genetics” A mutation in the KRT75 gene causes frizzle feathers in chickens.
38 citations
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November 2018 in “Scientific Reports” Bird scales evolved from feathers, not reptile scales.
22 citations
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December 2016 in “PloS one” A specific protein in chicken embryos links early skin layers to feather development.
13 citations
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December 2018 in “Development, Growth & Differentiation” Sex hormones, especially estradiol, can change chicken feather shapes and colors.