Pond Boss Forums STOCKING A NEW POND Creating the food chain Crayfish recommendations?

John, DNA in bone in located only in the inner bone aka bone marrow the living part or bone core. The silica shell itself of diatoms has no living part, it is pure silica thus no DNA. An animal bone and glass diatom shell have a completely different structure. The skeletal system is a complex living organ; multiple cell structure. Remember each diatom is a single cell. The glass diatom shell is not impregnated with DNA nor any organic material. The nucleic material and plant chloroplast are inside the inorganic shell. The glass shell of diatoms will withstand incineration to burn the inner organic contents and/or treatment with oxidizers such as nitric acid or strong hydrogen peroxide to digest the cell contents so one can better observe the shell structure.