Board Thread:General Discussion/@comment-24249713-20131205212144/@comment-25154376-20140723180735

Well, if we look at it from a Biological standpoint, this problem can be answered easily with a Punnett Square.

Let's assume for a second that in a Human-Faunus reproduction the Faunus traits are the recessive traits and the Humans are dominant. If that were case, you'd have 1 child with human traits and no ability to pass on Faunus genes. The next two offspring have Human traits, but are carriers of Faunus genetics, meaning that their offspring can be born Faunus. The last child would be born a fully-fledged Faunus with all physical traits and genetics of a Faunus.

So, biologically, the OP is correct that you can have "half Human half Faunus". However, they would not show any Faunus traits as Human genes are the dominant.

If Faunus genes were the dominant, you'd have the reverse: 1 full-blood Faunus, 2 Faunus with the ability to pass on Human genes, and 1 full-blood Human.