The Finger in the Nest - S4-E4
Character mistake: Hodgins discovers sap from a Japanese cherry tree on the bone from the nest. When the new graduate assistant suggests that it is one of the cherry trees at the Jefferson Memorial, Hodgins is skeptical of the information. In reality everyone who has lived in DC knows about the Japanese cherry trees at the memorial. They have an entire festival attributed to it every year and it practically shuts down the city with tourists. Hodgins should have known about the trees to begin with. (00:01:45)
Answer: Since the palatine bone is a bone that helps form the mouth it has a lot to do with speaking. The shape of it differs a lot depending on your ethnic background. I would guess that they, in the show, meant that the person's bone tells that they were Japanese and that it was "made for the purpose of speaking Japanese." That's what I'd assume anyway. I've studied molecular biology though, so I'm not an expert on bones.