Board Thread:Speculation House/@comment-14138255-20151129182644/@comment-24994749-20151129221733

ChishioKunrin wrote:Also, the fact that the Schnees' Semblance being hereditary is considered something that makes the Schnee family unique also throws a spanner in the works of that theory. That part also threw  me off because I recall the CRWBY saying that parents influence their children semblances... But they also said that when asked about Weiss' glyphs being identical to the SDC symbol...

Then, again, Winter said it made them "different from many" not "all", so perhaps (rolling along with what I said above about inter-clan marriage) it just means that in other families, the semblances passed down are more aleatory, while everybody born under the Schnee name has been getting the same semblance systematically.