Board Thread:General Discussion/@comment-968312-20150209182531/@comment-2A01:E35:2E5E:4F90:B8C0:2318:EAB9:E0D6-20170823220741

Since my blood type is O neg, am I due to the Ark? Hell no, rather be a grounder.

Seriously, the blood compatilbily may be too much of a complicated thing for writers to integrate in the scenario.