abernell

I was reading The Lost Metal yesterday, and this question just popped up in my head, as such questions often do (I learned pretty major spoilers about the end of both Era one and Era two book two). Does anybody know, or can you guess?

Alright, hear me out. Kandra create perfect copies of people's muscles. So, if one were to do the deed, could the Kandra use the reproductive organs they created to reproduce? Also, what would, say, Trell mixed with Kandra be? Asking because I'm doing DnD with a bit of homebrew, and I want to give my character familial bonds. And yes, Trell is actually my character's spouse.

I'm reading Mistborn Era two, and I asked this question officially, but how in the world are there both Cetts and Ladrians in Era two? The answer I got officially was that a lot can happen in 300 years, but that is stupid, as a bloodline that ended can't just spring back up again, no matter how long it's been. The best theory I have is that Ashweather had a kid besides Allrianne, who as we all know, joined the Ladrian bloodline, but I'm not sure (Another theory I have is that it's a plothole, but that's boring.). Can anybody come up with other theories? Please? I'm begging you.