Talk:Ken Kaneki/@comment-26232562-20150501165732/@comment-25047329-20150501171159

Since Kanou was very specifically looking for Rize, and later Yoshimura, it probably matters which ghouls are used for transfers. I think Rize was noted to have an unusually vigorous Kagune. It would also depend if Kaneki was compatible enough with that ghoul. Kanou was trying to achive Heterosis by making hybrids, but it doesn't happen every time.

http://en.wikipedia.org/wiki/Heterosis

I don't know enough about Biology to explain this sort of thing properly, but I think the gist of it is that when two species intermingle and they're genes are compatible, they achive Heterosis. That'e why Kanou was trying to figure out why Kaneki came out as good as he did compared to the twins. They had the exact same Kakuhou, but weren't nearly as strong, so Kanou was conducting experiments to see if things like blood type mattered.

So I guess the answer to your question is...yes and no? Which ghoul definitely matters for different reasons. A ghoul's strength and limitations probably weigh in, but the reciver most likely has to be compatible too..