Would it be possible that Trisomy 9 was caused by exposure to crystalline silica dust- an occupational hazard for those working in the concrete industry? Can someone explain to me in English how crystalline silica binds with DNA and how it affects conception or pregnancy?

I don't know anything about concrete and the affects it has, but the docs told me that my son's chromosome addition and deletion happend while the conception hit and there was nothing I could do or not do, to keep it from happening. Alberta do you have a family member with something associated to trisomy 9?