red, feel inside his mouth and see if his teeth line up with the gums like they are supposed too. interesting, the tissue from the part where there is no bone may be extending. another example of least penetrance? a lot of developmental genes operate in what are called cascades where they become more and more dilute, as say one goes down the spine or skull. interestingly, this is now being studied heavily, and just the other day, material scientists are extemely intrigued by the beaks of squids as they have a cascade of density, which allows them to maneuver their beek without getting sore, as the base of the beak is soft. this has massive implications for amputees and many other applications where one would like to have a gradient between soft and hard, or less dense to more dense molecules. it's really interesting these types of genes appear to be everywhere and slight tweaks of their expression can cause problems. once again, methylation can have an impact on this, ie storage of environmental constraints passed on by the mother.
