Yeah my oldest kid was slow to talk (fine now) so his pediatrician wanted to make sure there wasn't anything wrong, so his chromosomes were done (as well as Fragile X and all the other usual suspects). The report came back as normal chromosomes, so I can only assume he got my normal 5 and 16 (or that my wife was stepping out!!).

He has a normal 5 and a normal 16 as well as the modified versions.

My guess... The usual way. ;-)

He can still pass on the normal 5 & 16.