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. Author manuscript; available in PMC: 2019 Dec 10.
Published in final edited form as: Dev Biol. 2018 Aug 9;442(2):199–209. doi: 10.1016/j.ydbio.2018.07.027

Table 1.

Underrepresentation of Smad6−/− mice at Po.

Po Mice (total=133 (100%))
Smad6+/+ Smad6+/− Smad6−/−
Observed Expected Observed Expected Observed Expected
46 (35%) 33 (25%) 76 (57%) 67 (50%) 11 (8%) 33 (25%)

χ2=13.71, df=2,

**

p=<0.0011