Board Thread:News and Announcements/@comment-6533159-20151015224111/@comment-25396609-20151020014430

MetallicArcher wrote: Or perhaps hunters pass down to the child the surname of the parent their aura resembles more, as semblances have an hereditary factor to them amd Pyrrha implied a sensor factor in aura.

Schnee means Snow, and Weiss glyphs look like snow flakes, it would be weord if she had a surname that meant something unrelated.

Xiao Long means Little Dragon, and Yang's hair gets set on fire. Rose is well Rose, Ruby leaves behind rose petals, the surname dragon wouldn't go with her. I think it is more likely an aspect of the subconcious rather than of genetics, though it would still show a connection to the parent as a result.