It really, really is not binary. But it seems you've never met someone who's half-Asian and half-black.
Oh, I have. But do note that they are half-Asian and half-African; not Asian, and not African.
Yeah it's confusing - especially since at that point in the character creation table they still haven't officially been declared as a Navigator yet. I still think that because the text for a Navigator says to always roll on their table instead of the general Mutation table, then any mutations you gain through character creation should be re-rolled on that table. It seems most in line with the intent of what a Navigator is.
There is an argument to be made that the mutations on the Origin path does not count as gained mutations for the purpose of the latter Navigator-specific rules regarding mutations.
I'm not saying that argument is right or wrong, I'm just saying that there is one. Personally, before it was pointed out in this thread, I've always counted those mutations as coming from the general Mutation table.
There's a norm in rules-lawyering that states that Specific Rules trump General Rules. That is, if there's a general rule ("navigators roll on the navigator mutation table") that conflicts with a specific rule (such as the origin option actually stating exactly what table you are supposed to roll on.. which I think it does), the more specific rule takes precedence.
Again, I'm not saying this is 100% right or wrong, I'm just saying that there's an argument to be made and that it could use ironing out. Personally, I've never given it much thought.
Navigators and psykers can have babies but there be one or the other.
Editting out the parts of this thread I wish would go away, the book says that the Navigator gene is recessive so that if a Navigator has a child with someone who's not a Navigator, they definitely won't have a Warp Eye. Not sure if their child would be psychic. I would assume so, but it's never been made clear I think.
Recessive to what degree, though? If two couples of Navigator/Non-Navigator have a child each, both children born without the Third Eye, if those children have a child in turn, would there be a chance of that child manifesting a Third Eye?
I prefer to think of it as completely recessive, forcing Navigators to inbreed heavily and to actively trade their progenies between the houses to stave off inbreeding depression.
Concerning Navigators and rolling on the Mutations table, allow me to assist you with a quote from the Errata:
This means, that even if your character hasn't been declared by the game system as a Navigator at Character Creation, you still roll on the Navigator table, due to your character being a Navigator at birth, due to genetic engineering, breeding and so on. So if you're planning a Navigator, or chooses a Navigator career, your mutations must be from the Navigator Mutations chart. The Tainted (Mutant) option states that you should roll, and as such you default to the Navigator table as noted in the Errata. That you may pay to choose doesn't let you pick from the other chart. Contaminated Environs from Into The Storm also specifies rolling on that table.Question: Since Navigators wield Warp powers, bud to not possess a Psy Rating, can they gain a Psy Rating through the Wyrdling mutation?
Answer: No. Navigators are not psykers and can never become psykers or gain a Psy Rating. They have their own mutation chart ( Table 7-2: Navigator Mutations , on page 182 of the Rogue Trader Core Rulebook), and should never roll on Table 14-3: Mutations on page 369 of the Rogue Trader Core Rulebook.
I guess you could make the argument that you don't know what you'll play until you get to the bottom row, but I find that unlikely. Should that be the case, well, we hit a snag. Best would probably be to re-roll or pick the corresponding table entry from the other table.
Well that settles that with a nice little "Never!" .