The ratio of transition and transversion is 1.6:1.Po also behaves as an incomplete dominant in CAU resource reference population established by silkies and White Plymouth Rock broilers.

• 在由多趾的丝羽乌骨鸡和四趾的白洛克肉鸡杂交建立的CAU资源群体中，多趾呈不完全显性。