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Keywords:

  • Silkie;
  • ZRS;
  • Sonic hedgehog;
  • polydactyly

Abstract

Variable polydactylous phenotype of Silkie chicken feet, with expression of Shh in the developing limb buds (which is responsible for the polydactyly). From Dunn et al., Developmental Dynamics 240:1163–1172, 2011.