Silkie the "SHH" gene, called the ZPA Regulatory Sequence (ZRS). This causes ectopic "SHH" expression in the anterior of the developing limb bud, leading to increased tissue growth and digits. While the feet of the Silkie display polydactyly, the wings have the standard tridactyly (three digit) arrangement. The Japanese Silkie initially develops additional digits in the wing as an embryo, but these are lost prior to hatching. The genetic cause behind Silkie polydactyly differs from those that cause polydactyly in the Dorking chicken breed, which is due to ectopic "FGF4" expression in the AER, with ectopic "SHH" a secondary effect. The
What the Little Bird Told Him an average score of 6.5 out of 10 on the review aggregator Rotten Tomatoes, with the site's consensus stating: "The character work in 'What the Little Bird Told Him,' along with the comeuppance of the Electrocutioner, are strong enough to overcome the anti-climactic face-off between Fish and Carmine Falcone." Matt Fowler of IGN gave the episode a "okay" 6.4 out of 10 and wrote in his verdict, "I almost want to forgive the head-scratching moments from this week's Electrocutioner story since "Gotham"s usual M.O. for these types of villain cases is to dumb things down. Easy investigation, few bits of