BGN and dystocia: However, the Bgn+/−Dcn+/−, Bgn−/−Dcn+/−, Bgn+/+Dcn−/−, Bgn+/−Dcn−/−, and Bgn−/−Dcn−/− females have a significantly increased risk of dystocia compared to the wild-type (Figure 1A) (P<0.001).