1) We do know, we fail to acknowledge, if its not produceable, its lethal - why is it a unknown? People like BHB breed these things by the thousands, and keeps detailed records of all accounts. I'm positive he has the proof that it is lethal, but because its bad for business I think he isn't openly giving this information, but because he's not a bad guy and is interested in supporting the community, I promise he'd give it if he's directly asked for it. Remember the lack of evidence of a homozygous form proven out over multiple generations, is the proof.

2) This is true. We don't have to see slugs for there to have been infertile eggs that didn't even make it that far in the process.