Character mistake: Bones tells Cam she isn't able to ascertain sex of the victim due to no pelvic bone. However numerous times in the show she is able to confirm sex with just the skull. What's different here? (00:03:00)
Visible crew/equipment: When Bones, Hodgins, Cam and Vincent work out the victim was hit twice and it's murder, a lime green tape marker is visible between Vincent's feet. (00:34:20)
Continuity mistake: The way Booth holds the taper recorder during the first interview changes between shots. Note his fingers. (00:18:00)
Continuity mistake: Booth picks up a large white picture frame of the victim and holds it in his left hand. When the camera changes he turns around and is now holding it in his different hand. (00:08:20)
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.