Board Thread:Versus Debates/@comment-31074250-20170311171452/@comment-4080775-20170313024426

Ravenlot 27 wrote: Actually, there's no reason to believe White Zetsu can replicate the person's abilities in the first place. The only features they demonstrated are copying of the appearance and chakra, but nothing more. Moreover, if Zetsu were capable of that, they would be more of a tool in the FSWW where their efforts were focused only on infiltration and diversions, yet a complete replication of abilities could've turned them into a military force on the jonin/Kage level akin to Kabuto's reanimations had they copied powerful enough shinobi, while there were quite a lot of them. It never happened, so I severely doubt Zetsu can copy such god-level persons like Kaguya or Momoshiki even partially.

White Zetsu copied Neji's Byakugan through the Parasite Clone technique, even going as far as copying his Byakugan. The technique allows them to copy the abilities of others, though on a less powerful scale. So YES, they can replicate his abilities, though they will be much weaker.