25 phenotypes from 1 allele in 3 genetic backgrounds

Allelic Composition Genetic Background	Annotated Term	Reference
Bmp8btm1Blh/Bmp8b+ either: B6.129-Bmp8btm1Blh or (involves: 129 * Black Swiss * C57BL/6)	decreased primordial germ cell number	J:63160
Bmp8btm1Blh/Bmp8btm1Blh B6.129-Bmp8btm1Blh	absent allantois	J:63160
	absent primordial germ cells	J:63160
	delayed embryo turning	J:63160
	embryonic growth retardation	J:63160
	embryonic lethality during organogenesis, incomplete penetrance	J:63160
	small allantois	J:63160
Bmp8btm1Blh/Bmp8btm1Blh either: B6.129-Bmp8btm1Blh or (involves: 129 * Black Swiss * C57BL/6)	absent allantois	J:63160
	absent primordial germ cells	J:63160
	delayed embryo turning	J:63160
	small allantois	J:63160
Bmp8btm1Blh/Bmp8btm1Blh involves: 129/Sv * Black Swiss	abnormal allantois morphology	J:63160
	abnormal cell differentiation	J:34057
	abnormal male germ cell morphology	J:34057
	abnormal primordial germ cell morphology	J:63160
	abnormal reproductive system physiology	J:63160
	abnormal seminiferous tubule epithelium morphology	J:34057, J:46927
	abnormal spermatogenesis	J:34057
	abnormal spermatogonia proliferation	J:34057
	absent primordial germ cells	J:63160
	decreased male germ cell number	J:34057
	decreased primordial germ cell number	J:63160
	decreased testis weight	J:34057
	delayed allantois development	J:63160
	embryonic growth retardation	J:63160
	increased Leydig cell number	J:34057
	increased male germ cell apoptosis	J:34057
	male infertility	J:34057
	seminiferous tubule degeneration	J:34057, J:46927
	small allantois	J:63160
	small seminiferous tubules	J:34057
	small testis	J:34057, J:46927
	testis degeneration	J:34057