Bmpr1a<fx(exon2)> Bmpr1a fx BmpRIA<flox> Alk3<flox> Bmpr1a<f> floxP MGI:2158390 ALK3<F> Bmpr1a<fl> http://identifiers.org/mgd/MGI:2158390 Bmpr1a<tm1.1Cren> Bmpr1a<tm2.1Bhr> targeted mutation 2.1, Richard R Behringer Bmpr1a<fx> Bmpr1a fl No functional change|Conditional ready