Answer:
Heredity is considered a controllable risk factor.
Clam chowder (most chowders, actually) usually contain flour as a soup thickener so no, it's not gluten-free. It is possible to make a gluten-free dish but it'll be thinner. Depends if the resturant will do that or not.
I would say from a forward straight answer to describe very specific identitys like, the type of lizard, color, length, what it likes to eat, etc. :)
